Highs are 78°-82° in the wintertime to high 80s in the summer. i was there in mid june on way over to canada and late july; on way back. Honolulu Weather History for the Previous 24 Hours Show weather for: Previous 24 hours January 7, 2021 January 6, 2021 January 5, 2021 January 4, 2021 January 3, 2021 January 2, 2021 January 1, 2021 December 31, 2020 December 30, 2020 December 29, 2020 December 28, 2020 December 27, 2020 December 26, 2020 December 25, 2020 December 24, 2020 December 23, 2020 Honolulu's favorable tropical climate, rich natural scenery, and extensive beaches makes it a popular global destination for tourists. Honolulu weather history data including temperature, relative humidity, precipitation, cloudiness and weather extremes in tabular and graphical formats. When visiting at this time, you will see tropical flowers in bloom and can bask in balmy tropical temperatures in the low 80s. Find Out More. The temperature fluctuates from a very comfortable 19°C (66°F) to 27°C (81°F) as the highs, most of time hovering around 23°C (73°F). On January 16, the temperature in Honolulu typically ranges from 69°F to 78°F and is rarely below 64°F or above 81°F.. For reference, on August 23, the hottest day of the year, temperatures in Honolulu typically range from 76°F to 87°F, while on January 28, the coldest day of the year, they range from 68°F to 79°F. Honolulu weather in January is pretty hot with temperatures of 22.1° and 24.0° degrees, might be good for outdoors activity. Ocean temperatures are about 77° in the winter to 82° in the summer. The swimming season in Honolulu lasts from January to Whale season runs from mid December thru mid May. Remember: The climate in Hawaii in january ranges from perfect to good depending on the region and city. Hawaii’s weather is warm enough to allow tropical flowers and trees bloom all through the year. Since there are on average 18 rainy days in Honolulu in January and chances for rain are high, it is recommended to take an umbrella with you. July, August and September tend to be the hottest months, averaging around 31°C / 88°F, while December and January are usually the coolest, with average temperatures of 27°C / 81°F. Monthly: 1981-2010 normals History: 2007-2019 Sea water temperature in Honolulu is expected to drop to 24.5°C/76.1°F in the next 10 days. Please select the information that is incorrect. Hawaii Weather in January. Whale season runs from mid December thru mid May. National Weather Service - Honolulu Temperatures reach the low 80s F even now. Hawaii is blessed with balmy, tropical weather year-round. Hawaii’s weather is warm year round — even in the middle of winter. Whale season runs from mid December thru mid May. In the night it cools down to a minimum of a pleasant 66°F.Even though it won’t be too cold you might want to pack a sweater for the evenings out. Hawaii is blessed with balmy, tropical weather year-round. The weather is usually the number one thing tourists worry about no matter where they are going. The wettest month is January with an average of 61.2mm of rain. Rain and Mountain Snow in the West; Lake Effect Snow in the Northeast. Toggle navigation. I would consider the weather to be very pleasant particularly since I live in Spokane, Washington where there is usually snow and cold weather in January. we too will be in oahu for end of january begining of feb. glad to hear weather is still ok. i have been once before hubby never. warning in january the weather is not the same depending on the city and regions of the country. In january the weather is just perfect in Hawaii, but only in a few cities: in Maui, island of Hawaii (Big Island), Kahoolawe, Oahu (Honolulu), Lanai and Molokai. Day by day forecast. The weather and climate in Honolulu is constant, with very little fluctuation in temperatures. Last updated today at 10:22. 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