‘Ewa Beach Weather in December

What's the weather like in ‘Ewa Beach (Hawaii) in December 2025?

The climate in ‘Ewa Beach during December can be summarized as warm, humid and very wet.

December is in the winter in ‘Ewa Beach and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 19°C (65°F) is normal.

‘Ewa Beach weather averages (imperial / metric)
Daytime temperature 26.3°C 79.4°F
Nightly temperature 18.5°C 65.3°F
Average temperature 22.4°C 72.3°F
Daily sunshine 6.8 hrs
Avg rainfall 201 mm 7.9 ins
Rainy days 12 days
Sea temperature 25.1°C 77.2°F
Humidity 73%
Windspeed 17.6kph 11 mph

On average December is the 4th wettest month of the year in ‘Ewa Beach with around 201mm 7.9 inches of rain making it a very wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.8 hours of sunshine per day.

December temperatures in ‘Ewa Beach

‘Ewa Beach average temperature in December

December rainfall

‘Ewa Beach average rain in December

December hourly sunshine

‘Ewa Beach average rain in December

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in ‘Ewa Beach in December 2025.

Other monthly averages

Best places to visit in December

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

‘Ewa Beach weather stats

‘Ewa Beach weather statistics
Hottest month: August 29.8°C 85.6°F
Driest month: June 109mm 4.3ins
Sunniest month: August 10hrs
Coldest month: January 25.5°C 77.9°F
Wettest month: March 217mm 8.5ins
Map showing location of ‘Ewa Beach (21.31556, -158.00722) ‘Ewa Beach map pin © Google

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