Climate and monthly weather forecastEwa, HI
Climate and monthly weather forecast
Weather in January
January, the same as December, is a moderately hot winter month in Ewa, Hawaii, with an average temperature varying between 75.9°F (24.4°C) and 70.5°F (21.4°C). January's advent notes a subtle adjustment in average high-temperature to a still moderately hot 75.9°F (24.4°C) from December. Weather in January »Weather in February
February, the last month of the winter in Ewa, is another warm month, with an average temperature ranging between min 69.4°F (20.8°C) and max 74.8°F (23.8°C). Ewa's coldest month, February, generally records average temperatures ranging from a high of 74.8°F (23.8°C) to a low of 69.4°F (20.8°C). Weather in February »Weather in March
March, the first month of the spring in Ewa, is also a moderately hot month, with an average temperature fluctuating between 70.2°F (21.2°C) and 75.2°F (24°C). The average high-temperature during March registers at a still warm 75.2°F (24°C), maintaining a close resemblance to the previous month. Weather in March »Weather in April
April, the same as March, is a moderately hot spring month in Ewa, Hawaii, with an average temperature fluctuating between 76.8°F (24.9°C) and 72.1°F (22.3°C). The average high-temperature during April registers at a still warm 76.8°F (24.9°C), maintaining a close resemblance to the previous month. Weather in April »Weather in May
The last month of the spring, May, is another warm month in Ewa, Hawaii, with an average temperature varying between 78.6°F (25.9°C) and 73°F (22.8°C). The advent of May sees the average high-temperature at a still moderately hot 78.6°F (25.9°C), subtly shifted from April's 76.8°F (24.9°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Ewa, Hawaii, with an average temperature varying between 74.8°F (23.8°C) and 79.7°F (26.5°C). June's presence marks an average high-temperature of a still warm 79.7°F (26.5°C), subtly varied from May's 78.6°F (25.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Ewa, Hawaii, with an average temperature ranging between min 75.7°F (24.3°C) and max 80.6°F (27°C). The transition into July notes an average high-temperature of a still moderately hot 80.6°F (27°C), revealing a mild distinction from the 79.7°F (26.5°C) in June. Weather in July »Weather in August
The last month of the summer, August, is another warm month in Ewa, Hawaii, with an average temperature varying between 81.5°F (27.5°C) and 76.3°F (24.6°C). The months of August and September bring the highest temperatures, averaging a high of 81.5°F (27.5°C). In August, the average heat index is evaluated at a hot 86°F (30°C). Weather in August »Weather in September
September, the first month of the autumn in Ewa, is still a warm month, with an average temperature ranging between min 76.3°F (24.6°C) and max 81.5°F (27.5°C). August and September, with an average high-temperature of 81.5°F (27.5°C), are the warmest months. The heat index in September is evaluated at a hot 86°F (30°C). Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Ewa, Hawaii, with an average temperature ranging between max 81.1°F (27.3°C) and min 76.1°F (24.5°C). Ewa's average high-temperature marks a still moderately hot 81.1°F (27.3°C) with the advent of October, closely mirroring that of the preceding month. Weather in October »Weather in November
November, the last month of the autumn in Ewa, is also a moderately hot month, with an average temperature fluctuating between 74.5°F (23.6°C) and 78.8°F (26°C). November experiences an average high-temperature of a still warm 78.8°F (26°C), barely different from October's 81.1°F (27.3°C). Weather in November »Weather in December
The first month of the winter, December, is still a warm month in Ewa, Hawaii, with an average temperature fluctuating between 76.6°F (24.8°C) and 71.8°F (22.1°C). Upon the onset of December, Ewa witnesses an average high-temperature of a still moderately hot 76.6°F (24.8°C), showing a close resemblance to the prior month. Weather in December »Updated: Jul 3, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, April through June, August through November, with an average relative humidity of 74%, are the least humid months.
Throughout the year, there are 172.2 rainfall days, and 12.72" (323mm) of precipitation is accumulated.
January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index.
February, having an average high-temperature of 74.8°F (23.8°C) and an average low-temperature of 69.4°F (20.8°C), is the coldest month.
March is the month with the most rainfall. Rain falls for 18.1 days and accumulates 1.77" (45mm) of precipitation.
June has the longest days of the year, with an average of 13h and 24min of daylight.
June has the most sunshine of the year, with an average of 11h of sunshine.
The months with the highest UV index are June through September, with an average maximum UV index of 7.
The month with the least rainfall is July, when the rain falls for 11.3 days and typically collects 0.43" (11mm) of precipitation.
The height of temperatures is seen during August and September, averaging a high-temperature of 81.5°F (27.5°C).
November has the least sunshine of the year, with an average of 6.7h of sunshine.
With an average relative humidity of 76%, December is the most humid month.
The month with the shortest days is December, with an average of 10h and 54min of daylight.
Ewa does not utilize Daylight Saving Time (DST). HST timezone is used over the entire year.
Average temperature
Ewa, 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).
Average pressure
Ewa, HI
- Average pressure in January:
30"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
30.05"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30"Hg - Average pressure in December:
29.99"Hg
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).
Average wind speed
Ewa, HI
- Average wind speed in January:
9.1mph - Average wind speed in February:
10.2mph - Average wind speed in March:
11.2mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.6mph - Average wind speed in June:
11.7mph
- Average wind speed in July:
11.9mph - Average wind speed in August:
11.3mph - Average wind speed in September:
9.8mph - Average wind speed in October:
9.1mph - Average wind speed in November:
11mph - Average wind speed in December:
10mph
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).
Average humidity
Ewa, 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%).
Average rainfall
Ewa, HI
- Average rainfall in January:
0.98" - Average rainfall in February:
1.42" - Average rainfall in March:
1.77" - Average rainfall in April:
0.94" - Average rainfall in May:
1.14" - Average rainfall in June:
0.83"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.67" - Average rainfall in September:
0.83" - Average rainfall in October:
1.42" - Average rainfall in November:
0.91" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is March (1.77").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Ewa, HI
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
15 days - Average rainfall days in March:
18.1 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
12 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
15.7 days - Average rainfall days in November:
13.5 days - Average rainfall days in December:
14.5 days
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).
Average daylight / Average sunshine
Ewa, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 12min - Average daylight in June:
13h and 24min
- Average daylight in July:
13h and 18min - Average daylight in August:
12h and 48min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 6min - Average daylight in December:
10h and 54min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January:
8h and 42min - Average sunshine in February:
8h and 18min - Average sunshine in March:
8h and 18min - Average sunshine in April:
8h and 36min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 12min - Average sunshine in September:
9h and 18min - Average sunshine in October:
8h and 30min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 48min
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).
Average sunshine days
Ewa, HI
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
8.4 days - Average sunshine days in March:
6.8 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
13.9 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
12.2 days - Average sunshine days in October:
9.5 days - Average sunshine days in November:
9.5 days - Average sunshine days in December:
10.5 days
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).
Average UV index
Ewa, 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).
Average cloud cover
Ewa, HI
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Ewa, 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).
