Climate and monthly weather forecast
Ewa Beach, HI

Weather in January

January, the same as December, is a moderately hot winter month in Ewa Beach, Hawaii, with an average temperature fluctuating between 70.5°F (21.4°C) and 75.9°F (24.4°C). In Ewa Beach, Hawaii, the average high-temperature in January is essentially the same as in December - a still warm 75.9°F (24.4°C). Weather in January »

Weather in February

February, the last month of the winter in Ewa Beach, is also a moderately hot month, with an average temperature varying between 74.8°F (23.8°C) and 69.4°F (20.8°C). February is the coldest month, with an average high-temperature of 74.8°F (23.8°C) and an average low-temperature of 69.4°F (20.8°C). Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Ewa Beach, Hawaii, with an average temperature ranging between max 75.2°F (24°C) and min 70.2°F (21.2°C). In March, the average high-temperature is practically the same as in February - a still warm 75.2°F (24°C). Weather in March »

Weather in April

April, like March, in Ewa Beach, Hawaii, is a moderately hot spring month, with temperature in the range of an average low of 72.1°F (22.3°C) and an average high of 76.8°F (24.9°C). In Ewa Beach, Hawaii, the average high-temperature in April is relatively the same as in March - a still moderately hot 76.8°F (24.9°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Ewa Beach, Hawaii, with temperature in the range of an average low of 73°F (22.8°C) and an average high of 78.6°F (25.9°C). In May, the average high-temperature is almost the same as in April - a still moderately hot 78.6°F (25.9°C). Weather in May »

Weather in June

June, the first month of the summer in Ewa Beach, is still a warm month, with an average temperature fluctuating between 74.8°F (23.8°C) and 79.7°F (26.5°C). In Ewa Beach, the average high-temperature in June is almost the same as in May - a still warm 79.7°F (26.5°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Ewa Beach, Hawaii, with an average temperature ranging between max 80.6°F (27°C) and min 75.7°F (24.3°C). In July, the average high-temperature is essentially the same as in June - a still warm 80.6°F (27°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Ewa Beach, Hawaii, with an average temperature fluctuating between 76.3°F (24.6°C) and 81.5°F (27.5°C). The warmest months are August and September, with an average high-temperature of 81.5°F (27.5°C). In August, the average heat index is calculated to be a hot 86°F (30°C). Weather in August »

Weather in September

September, the first month of the autumn in Ewa Beach, is also a moderately hot month, with an average temperature fluctuating between 81.5°F (27.5°C) and 76.3°F (24.6°C). The warmest months are August and September, with an average high-temperature of 81.5°F (27.5°C). The average heat index in September is calculated to be a tropical 86°F (30°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Ewa Beach, Hawaii, with an average temperature fluctuating between 81.1°F (27.3°C) and 76.1°F (24.5°C). In October, the average high-temperature is almost the same as in September - a still warm 81.1°F (27.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Ewa Beach, is another warm month, with an average temperature varying between 78.8°F (26°C) and 74.5°F (23.6°C). In Ewa Beach, the average high-temperature in November is practically the same as in October - a still moderately hot 78.8°F (26°C). Weather in November »

Weather in December

December, the first month of the winter in Ewa Beach, is also a moderately hot month, with an average temperature ranging between min 71.8°F (22.1°C) and max 76.6°F (24.8°C). In December, the average high-temperature is relatively the same as in November - a still moderately hot 76.6°F (24.8°C). Weather in December »
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FAQ

What is the least humid month in Ewa Beach?

January, April through June, August through November, with an average relative humidity of 74%, are the least humid months.

How many days does it rain in Ewa Beach?

Throughout the year, there are 172.2 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

What are the months with the lowest UV index in Ewa Beach?

The months with the lowest UV index are January through May, October through December, with an average maximum UV index of 6.

What is the coldest month in Ewa Beach?

The coldest month in Ewa Beach, Hawaii, is February, with an average high-temperature of 74.8°F (23.8°C) and an average low-temperature of 69.4°F (20.8°C).

What is the rainiest month in Ewa Beach?

March is the month with the most rainfall in Ewa Beach, Hawaii. Rain falls for 18.1 days and accumulates 1.77" (45mm) of precipitation.

When is the ocean coldest in Ewa Beach?

The month with the coldest seawater is March, with an average ocean temperature of 75.7°F (24.3°C).

When are the longest days in Ewa Beach?

The month with the longest days in Ewa Beach, Hawaii, is June, with an average of 13h and 25min of daylight.

What month has the most sunshine in Ewa Beach?

June has the most sunshine of the year, with an average of 11h of sunshine.

What is the month with the highest UV index in Ewa Beach?

June through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the driest month in Ewa Beach?

July is the month with the least rainfall in Ewa Beach. Rain falls for 11.3 days and accumulates 0.43" (11mm) of precipitation.

What are the warmest months in Ewa Beach?

Warmest months are August and September, with an average high-temperature of 81.5°F (27.5°C).

When is the ocean warmest in Ewa Beach?

The month with the warmest seawater in Ewa Beach is September, with an average ocean temperature of 80.6°F (27°C).

What is the month with the least sunshine in Ewa Beach?

November has the least sunshine of the year in Ewa Beach, with an average of 6.7h of sunshine.

What is the most humid month in Ewa Beach?

With an average relative humidity of 76%, December is the most humid month in Ewa Beach, Hawaii.

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

The month with the shortest days in Ewa Beach, Hawaii, is December, with an average of 10h and 52min of daylight.

Is there Daylight Saving Time (DST) in Ewa Beach?

Ewa Beach, Hawaii, does not utilize Daylight Saving Time (DST). HST timezone is used over the entire year.

Average temperature
Ewa Beach, HI

Average temperature - Ewa Beach, HI

The warmest months (with the highest average high temperature) are August and September (81.5°F).
The month with the lowest average high temperature is February (74.8°F).

The months with the highest average low temperature are August and September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.4°F).

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Average pressure
Ewa Beach, HI

Average pressure - Ewa Beach, HI

The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed
Ewa Beach, HI

Average wind speed - Ewa Beach, HI

The windiest month (with the highest average wind speed) is July (11.9mph).
The calmest months (with the lowest average wind speed) are January and October (9.1mph).

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Average humidity
Ewa Beach, HI

Average humidity - Ewa Beach, HI

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).

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Average rainfall
Ewa Beach, HI

Average rainfall - Ewa Beach, HI

The wettest month (with the highest rainfall) is March (1.77").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days
Ewa Beach, HI

Average rainfall days - Ewa Beach, HI

The month with the highest number of rainy days is March (18.1 days).
The month with the least rainy days is July (11.3 days).

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Average sea temperature
Ewa Beach, HI

Average sea temperature - Ewa Beach, HI

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).

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Average daylight / Average sunshine
Ewa Beach, HI

Average daylight / Average sunshine - Ewa Beach, HI

The month with the longest days is June (Average daylight: 13h and 25min).
The month with the shortest days is December (Average daylight: 10h and 52min).

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

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Average sunshine days
Ewa Beach, HI

Average sunshine days - Ewa Beach, HI

The months with the most sunshine days are July and August (15.3 days).
The month with the least sunshine days is March (6.8 days).

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Average UV index
Ewa Beach, HI

Average UV index - Ewa Beach, HI

The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).

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Average visibility
Ewa Beach, HI

Average visibility - Ewa Beach, HI

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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