Kahului (HI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Kahului.
Climate overview of Kahului
The climate in Kahului, Hawaii, United States of America, is remarkably consistent, with temperatures year-round averaging 28°C (82°F). The warmest month is August at 29°C (84°F), and the coolest is February at 26°C (79°F).
Annual rainfall is moderate at around 593 mm (23 in), with March being the wettest month. The city also has a distinct dry season from May to July. Sunshine peaks in July, when the city sees around 9.8 hours of sunshine per day.
Kahului Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kahului — and find the best time to visit.
Monthly Temperature in Kahului
In Kahului temperatures are generally consistent throughout the year. Average daytime temperatures reach a comfortable 29°C (84°F) in August. In February, the coolest month of the year, temperatures drop to a comfortable 26°C (79°F).
At night, temperatures range from around 24°C (75°F) in August to 20°C (68°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Kahului
On average, Kahului receives a reasonable amount of rainfall, with an annual precipitation of 593 mm (23 in). Kahului can be quite wet during March, receiving approximately 74 mm (2.9 in) of precipitation over 12 rainy days.
In contrast, during the driest month (June), you will experience much drier conditions, with 32 mm (1.3 in) of precipitation spread across 7 rainy days days. For more details, please visit our Kahului Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Kahului
Kahului experiences moderate variation in sunshine hours across the seasons. With 9.8 hours daily sunshine in July, it dips to 7.0 hours in February, offering a balanced mix of sunny and overcast days.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Kahului
The mean water temperature over the year ranges from 24°C (75°F) in January to 27°C (81°F) in September.
Water temperature over the year
Humidity in Kahului by Month
The relative humidity is high throughout the year in Kahului.
The city experiences its highest humidity in January, reaching 78%. In August, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Kahului
The average wind speed over the year ranges from 4 m/s (8 knots) to 6 m/s (12 knots). It is lower in January, February, October, November and December and higher in June, July and August. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Kahului
Frequently asked questions about the climate in Kahului
What is the best time to visit Kahului?
Kahului has a distinct dry season from May to July.
What temperatures can I expect in Kahului?
Daytime highs range from 26°C (79°F) in February to 29°C (84°F) in August. Nighttime lows range from 20°C (68°F) to 24°C (75°F). Temperatures stay relatively stable year-round.
How much rain does Kahului get?
Annual rainfall is around 593 mm (23 in). March is the wettest month with 74 mm (2.9 in), while June is the driest with 32 mm (1.3 in).
How sunny is Kahului?
Kahului receives around 2,989 hours of sunshine per year. July is the sunniest month with 294 hours, while February is the cloudiest with just 210 hours. Overall, Kahului enjoys abundant sunshine.
Kahului 3-Day Forecast
Kahului (HI) 3-Day Forecast
Kahului on the map
Kahului is highlighted — select any city to see its climate.
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