Also note that because of these high elevations, there is less protection from the sun's powerful UV rays, so come prepared with sunblock and sunglasses. More often there are one or two such storms a year; sometimes four or five. The months of January and February feature the coldest climate of the year, with January daytime temperatures of 27°C / 80°F, which can drop to 18°C / 64°F. Located 2,365 km above the equator, Hawaii has a tropical climate that enjoys fantastic weather all year round. Ocean temperatures are also perfect ranging from 71 to 81 degrees year round. The island of Hawaii for example hosts 4 (out of 5 in total) climate groups on a surface as small as 4,028 square miles (10,430 km2) according to the Köppen climate types: tropical, arid, temperate and polar. There are number of reasons why this has been observed only in Hawai‘i. These winds are forced upslope by the mountain heights, where their moisture condenses into clouds that produce rain. Such storms bring heavy rains and can be accompanied by strong local winds. These effects can be especially pronounced in people with respiratory conditions and young children. Not all hazy conditions are caused by vog. Third, the Hawaiian Islands are large in horizontal (east-west) scale, extending over four degrees in longitude. On windward coasts, many brief showers are common, not one of which is heavy enough to produce more than 0.01 in (0.25 mm) of rain. Hilo is the wettest city in the US, receiving more 130 inches of rain per year while Mt. Hawaii's fourth largest island is called the “Garden Island.”.  Windward slopes have greater rainfall than leeward lowlands and tall mountains.. These months have the lowest temperatures for the year. Expect to see lots of sunshine in Kona all year round but especially during the summer months (April to October). In the leeward areas, temperatures may reach into the low 90s several days during the year, but temperatures higher than these are unusual. Hawaii’s proximity to the equator means that its weather is tropically warm and consistent throughout the year. The break (a large-scale feature of the Pacific High) is caused by a temperature inversion embedded in the moving trade wind air. This split causes a zone of weak winds, called a "wind wake", on the leeward side of the islands.. Monthly: 1981-2010 normals History: 2007-2019 Every year or two a tropical storm will affect the weather in some part of the islands. In the Pliocene era, where CO2 levels were comparable to those we see today, the waters around Hawai'i were much warmer, resulting in frequent hurricane strikes in computer simulations.. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Honolulu, HI 2525 Correa Rd Suite 250 Honolulu, HI 96822 The long wake testifies to the strong interaction between the atmosphere and ocean, which has strong implications for global climate research. Weather Highlights. At the summit of the volcano, temperatures may be 12 to 15 degrees cooler than at sealevel. Remember: The climate in Hawaii in july ranges from perfect to good depending on the region and city. The Hawaiian Islands receive most of their precipitation from October to April. Select a destination to see the climate guide for all months of the year. Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.. Below are average maximum temperatures at popular destinations in Hawaii for next month - December. Thus daily range is wider than seasonal. Each place has a total for the amount of precipitation it usually receives in a year. Because tropical storms resemble Kona storms, and because early records do not distinguish clearly between them, it has been difficult to estimate the average frequency of tropical storms. The name comes from winds out of the "kona" or usually leeward direction. Hawaii differs from many tropical locations with pronounced wet and dry seasons, in that the wet season coincides with the winter months (rather than the summer months more typical of other places in the tropics). Maui is known for its year-round warm and pleasant weather. Quaint towns, farms and beautiful beaches await on the “Valley Isle.”. Keep in mind that Kauai is small enough to drive around in a single day, it only takes about an hour to reach almost any part of the island, and daylight hours don’t change much throughout the year. Hawaii’s weather is warm all year round with daytime high temperatures ranging from 78F in the “colder” months to 88F in the hotter months. Annual Weather Averages Near Kailua-Kona. Kona storm rains are usually most intense in an arc, extending from south to east of the storm and well in advance of its center. Winter scarcely exists in Hawaii; its two main seasons are characterised by a warm winter and an even warmer summer. Step off the plane and feel the warm embrace of Kauai with average yearly temperatures ranging between 84 and 69 degrees. Disclaimer … Hawai‘i's high mountains present a substantial obstacle to the trade winds. Average temperatures in Waimea range between 61 and 68°F (16 and 20°c). Under trade wind conditions, there is very often a pronounced moisture discontinuity between 4,000 and 8,000 feet (1,200 and 2,400 m). followed by questions about the specific months they intend to visit. Second, the high mountain topography provides a significant disturbance to the winds. The inversion is present 50 to 70 percent of the time; its height fluctuates from day to day, but it is usually between 5,000 and 7,000 feet (1,500 and 2,100 m). In August, the warmest month, the average day time temperature rises to 88.9°F. In the Northern Hemisphere, trade winds blow from northeast to southwest, from North and South America toward Asia, between the equator and 30 degrees north latitude. In Pahoa, there are 12 comfortable months with high temperatures in the range of 70-85°. This warm water drives further changes in wind, allowing the island effect to extend far into the western Pacific. Nontornadic waterspouts are more common than tornadoes produced by supercells, which produce stronger, longer lasting tornadoes, especially with respect to inland areas, and also produce the largest hail, such as the 2012 Hawaii hailstorm. Waimea, Hawaii - Travel and vacation weather averages, current conditions and forecasts. Average Maui Weather by the Month December, January, February. The climate guide for Kailua, Oahu, Hawaii shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. the expected highest and lowest temperature readings at any point during the year or given month) calculated based on data at said location from 1981 to 2010. However, in this period, temperatures are a bit lower, nights can be cool, rainfall is more abundant on the northern slopes and is fairly frequent also on the southern slopes, and even some short storms (i.e. These winds tend to be strongest from 2,000 to 4,000 ft (600 to 1,200 m) above mean sea level. Hawaii Weather Today Brought to you by Maui Weather Today. The humidity averages for each month are listed below for places in Hawaii. Ask your hotel staff or a lifeguard about ocean currents or look for warning flags and posted beach conditions. They are also called "lehua winds" after the ʻōhiʻa lehua (Metrosideros polymorpha), whose red blossoms fill the air when these strong winds blow. Learn about Hawaii’s customs and traditions. Big Island of Hawaii Weather Patterns. Many people visit Maui during the winter not just because of the weather on Maui, but to escape the cold weather back home. Official records for Honolulu have been kept at downtown from February 1877 to September 1949, and at Honolulu Int'l since October 1949. During the winter on many north shore beaches, Pacific storms drive ocean swells towards the islands, creating The Hawaiian Islands’ legendary big waves. When counting also the Köppen sub-categories the island of Hawaii hosts 10 (out of 14 in total) climate zones. With regular showers, these winter months are home to the wettest Maui weather of the year. In February, Maui gets the coolest temperatures of the year and a healthy precipitation average of 2 inches (48 mm).The average low temperature and average high temperature measure in at 63°F (17°C) and 81°F (27°C) respectively. The Big Island has 10 of the 15 types of the world’s climate. Hawaii has a spectacular, diverse climate and enjoys nearly perfect weather. Most locations also have information on the number of days with wet weather. Hawaii’s famous Hula dancers will compete at the Merrie Monarch Festival in the biggest hula competition of the year, which usually takes places a week after Easter. Thankfully, the islands are cooled by trade winds that provide a refreshing breeze even in the scorching temperatures. Winter scarcely exists in Hawaii; its two main seasons are characterised by a warm winter and an even warmer summer. It is not advisable to exercise or participate in strenuous outdoor activities when the vog is very heavy. Station Data. These winds only occur every 8 to 12 years. The Morning relative humidity percentages are for 7 am and Afternoon levels are for 1 pm local standard time. Weather patterns in Hawaii are dominated by the so-called trade winds. Hana has had as much as 28 in (710 mm) of rain in a single 24-hour period. Average monthly Rainfall, Sunshine, Temperatures. Coastal areas are drier, especially the south and west side or leeward sides.. The climate in Hilo is warm, muggy, windy, and partly cloudy. Another point to note about the above rainfall chart is that the significant increase in rainfall between February and March is partially due to the fact that March has more days than February. Weather in Pahoa, Hawaii. At an elevation of 10,023 feet, the summit of Haleakala can be as much as 30° F cooler than resort areas on the coast. Over the course of the year, the temperature typically varies from 68°F to 87°F and is rarely below 63°F or above 89°F. Hawaii weather today forecast includes satellite pictures, news, tsunami warnings. If you see a white mist along the coast, it could simply be salt spray hanging in the air. Monthly averages Honolulu Longitude: -157.922, Latitude: 21.3187 Average weather Honolulu, HI - 96819. Check your local news weather report. It is this active interaction between wind, ocean current, and temperature that creates this uniquely long wake west of Hawaii. Temperatures at night are approximately 10° F lower than the daytime. The island of Molokai remains true to its island roots. Temperature varies by elevation. Hawaii, USA: Annual Weather Averages August is the hottest month in Hawaii with an average temperature of 27°C (81°F) and the coldest is January at 23°C (73°F) with the most daily sunshine hours at 11 in July. Hawaii's Mountains & Volcanoes Rarely does the temperature rise from above 90 °F (32 °C) or drop below 60 °F (16 °C) at lower elevations. Climate Historical Summaries Weather", National Oceanic and Atmospheric Administration, "WMO climate normals for Hilo/WSO AP 87, HI 1961−1990", "WMO Climate Normals for HONOLULU, OAHU, HI 1961–1990", https://en.wikipedia.org/w/index.php?title=Climate_of_Hawaii&oldid=988515216, Articles with unsourced statements from February 2018, All articles with vague or ambiguous time, Vague or ambiguous time from February 2018, Creative Commons Attribution-ShareAlike License, Source: NOAA (relative humidity and sun 1961−1990), Source: NOAA (relative humidity and sun 1961–1990), This page was last edited on 13 November 2020, at 17:25. This means that if it is raining where you are, there is almost always a sunny spot to be found around the coast. These towering clouds form along the mountains where the incoming trade wind air converges as it moves up a valley and is forced up and over the mountains to heights of several thousand feet. Monthly: 1981-2010 normals March is penultimate month of rainy season with average amount of precipitation about 1.9” (50 mm). An annual average of approximately one tornado, either emanating from supercells or by other processes, occurs. A true-color satellite view of Hawaii shows that most of the flora on the islands grow on the north-east sides, which face the trade winds. Honolulu's coldest month is February when the average temperature overnight is 65.4°F. Select a destination to see the climate guide for all months of the year. Station Data. Kona lies on the leeward side of the Big Island. By VI Staff on October 15, 2020 - Updated. The surface waters of the open ocean around Hawaii range from 75 °F (24 °C) between late February and early April, to a maximum of 82 °F (28 °C) in late September or early October. Best Time to Visit Maui, Hawaii - Weather Year Round. On Maui, the summit of Haleakalā occasionally experiences snowfall, but snow had never been observed below 7,500 feet (2,300 m) before February 2019, when snow was observed at 6,200 feet (1,900 m) and fell at higher elevations in amounts large enough to force Haleakalā National Park to close for several days. These are winds blowing from high-pressure zones in the north Pacific that pump cool, moist winds down onto the island’s eastern and northeastern slopes. The wettest month is January with an average of 61.2mm of rain. Over the course of the year, the temperature typically varies from 64°F to 83°F and is rarely below 60°F or above 86°F.. Based on the tourism score, the best time of year to visit Hilo for warm-weather activities is from late to mid October. , True hurricanes are rare in Hawai'i, thanks in part to the comparatively cool waters around the islands as well as unfavorable atmospheric conditions, such as enhanced wind shear; only four have affected the islands during 63 years.[when?] Average Weather in Hilo Hawaii, United States. Find out more about our data sources. Monthly averages Honolulu Longitude: -157.922, Latitude: 21.3187 Average weather Honolulu, HI - 96819. BESTPLACES COMFORT INDEX. Honolulu Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual; Avg. Hawaii governor delays plan to reopen tourism again. However, the wind wake caused by the Hawaiian Islands extends 1,860 miles (3,000 km), roughly 10 times longer than any other wake. Depending on your personal sensitivity, you may want to learn more about vog before traveling to Hawaii Island and visiting Hawaii Volcanoes National Park. Water & Surf Conditions During the winter, snowfall is common at the summits of Mauna Kea and Mauna Loa on Hawaii Island. BESTPLACES COMFORT INDEX. The usual run of trade wind weather yields many light showers in the lowlands, whereas torrential rains are associated with a sudden surge in the trade winds or with a major storm. On Maui, the cloudiest zones are at and just below the summits of the mountains, and at elevations of 2,000 to 4,000 ft (600 to 1,200 m) on the windward sides of Haleakala. However, as the largest island in the archipelago, the climate can vary dramatically depending on the area. Summer High: the July high is around 81 degrees Winter Low: the January low is 63 Rain: averages 101 inches of rain a year Snow: averages 0 inches of snow a year. Several times during the year the trade winds will stop completely, and the wind will switch around to come out of the south or west, bringing stormy or hot, sticky weather. Its daytime temperatures along the coasts generally range from only the mid-70s to the mid-80s most of the year. Vog is caused when sulfur dioxide and other gasses from Kilauea's Halemaumau Crater (on the island of Hawaii) mix with moisture in the air and sunlight. There are really only two seasons in Hawaii: summer (kau) from May to October and winter (hooilo) from November to April. The island of Hawaii for example hosts 4 (out of 5 in total) climate groups on a surface as small as 4,028 square miles (10,430 km 2) according to the Köppen climate types: tropical, arid, temperate and polar.