Ewa Beach
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Ewa Beach, HI

December, the first month of the winter, in Ewa Beach, is still a warm month, with average temperature ranging between max 81.7°F (27.6°C) and min 65.3°F (18.5°C).
The ideal ocean temperature of 77.4°F (25.2°C) and 3.3" (83.8mm) of accumulated rainfall makes December the best time for swimming and other water activities.

Temperature

In December, the average high-temperature is practically the same as in November - a still warm 81.7°F (27.6°C). In Ewa Beach, the average low-temperature is 65.3°F (18.5°C).

Rainfall

The month with the most rainfall in Ewa Beach is December when 3.3" (83.8mm) of precipitation is typically aggregated.

Ocean temperature

In Ewa Beach, the average water temperature is 77.4°F (25.2°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

December has the shortest days of the year, with an average of 10.9h of daylight.

What is the temperature in December in Ewa Beach?

In December, in Ewa Beach, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 65.3°F (18.5°C).

How much does it rain in Ewa Beach in December?

Throughout December, 3.3" (83.8mm) of precipitation is accumulated.

What is the wettest month in Ewa Beach?

December is the month with the most rainfall in Ewa Beach, Hawaii, with 3.3" (83.8mm) of accumulated precipitation.

What is the ocean temperature in December in Ewa Beach?

In Ewa Beach, in December, the average water temperature is 77.4°F (25.2°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the shortest days in Ewa Beach?

December has the shortest days of the year in Ewa Beach, with an average of 10.9h of daylight.

How many hours of daylight does Ewa Beach have in December?

In Ewa Beach, Hawaii, the average length of the day in December is 10.9h.
Average temperature in December - Ewa Beach, HI
  • Average high temperature in December: 81.6°F

Warmest months (with the highest average high temperature) are August and September (88.3°F).
The month with the lowest average high temperature is January (80.5°F).

  • Average low temperature in December: 65.3°F

The month with the highest average low temperature is August (71.4°F).
The coldest month (with the lowest average low temperature) is February (62.7°F).

Average rainfall in December - Ewa Beach, HI
  • Average rainfall in December: 3.3"

The wettest month (with the highest rainfall) is December (3.3").
Driest months (with the lowest rainfall) are June and August (0.4").

Average sea temperature in December - Ewa Beach, HI
  • Average sea temperature in December: 77.3°F

The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

Average daylight in December - Ewa Beach, HI
  • Average daylight in December: 10.9h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).