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📍 USA · Avg 2014–2023
🇺🇸

Big Island

19.64°N, -155.99°W

The best time to visit Big Island: January (avg. 21.9 °C, 12 rainy days).

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Note: Climate values are from the main town Kailua-Kona. On larger islands, weather in other parts of Big Island (mountains, other coast, inland) can differ noticeably.
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Hottest Month
Ø 25°C
Aug
↑ 27°C↓ 23°C
🧊
Coldest Month
Ø 21.9°C
Jan
↑ 24.3°C↓ 19.4°C
☀️
Sunniest Month
12.0 h
Jul · avg per day
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Most Rainy Days
26
May · days/month
🏖️ Top travel time:Jan
☀️ Good travel time:FebMarAprMayJunJulAugSepOctNovDec
Month by month

📊 Monthly Climate Overview

MonthMax °CMin °CRain mmRain DaysSun hWind km/hSea °C
Jan24.3°C19.4°C75.4 mm1210.3 h12.4 km/h25.5°C
Feb24.3°C19.4°C100.4 mm1410.2 h12.4 km/h25.1°C
Mar24.5°C20°C91.2 mm1710.1 h12.8 km/h25°C
Apr24.9°C20.6°C178.3 mm2310.7 h12.2 km/h25.4°C
May25.1°C21.3°C193.5 mm2611.1 h12.5 km/h26.2°C
Jun25.7°C22°C223 mm2511.4 h12.1 km/h26.4°C
Jul26.7°C22.7°C196.3 mm2512.0 h11.7 km/h27°C
Aug27°C23°C218.4 mm2511.6 h11.8 km/h27°C
Sep27°C23°C174.8 mm2211.1 h11.4 km/h27.1°C
Oct26.8°C22.5°C133.8 mm2010.7 h11.5 km/h27.2°C
Nov26°C21.4°C88.9 mm1510.1 h11.7 km/h26.9°C
Dec24.9°C20°C115.4 mm159.7 h11.5 km/h26.1°C

📖Climate & Best Time to Visit Big Island

Big Island (USA) has a subtropical climate with an annual average of around 23 °C. Daytime highs average 26 °C, while nights cool to about 21 °C. The destination sees roughly 1789 mm of rainfall per year and 10.7 hours of sunshine per day on average.

Warm and tropical year-round — daily highs stay between 24 and 27 °C. The real variable is rain: January with only 12 rainy days is ideal, while May (26 rainy days) brings monsoon showers.

Rainfall varies through the year: peaks in May (26 rainy days), driest month is January (12).

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🌦️WeatherLive & 14-day forecast🌐World mapView on the map🗺️Plan tripBest time: Jan

Frequently asked questions about Big Island

When is the best time to visit Big Island?

The best time to visit Big Island: January (avg. 21.9 °C, 12 rainy days). Based on the monthly values for 2014 to 2023.

What are the temperatures in Big Island?

The warmest month is August with an average of 25.0 °C and daytime highs around 27.0 °C. The coldest month is January with an average of 21.9 °C and night-time lows around 19.4 °C.

How many rainy days does Big Island have?

May has the most rainy days with 26 rainy days. The driest month is January with 12 rainy days.

What is the sea temperature near Big Island?

The water is warmest in October at an average of 27.2 °C and coolest in March at 25.0 °C.