Climate and monthly weather forecastKoloa, HI
Climate and monthly weather forecast
Weather in January
January, like December, in Koloa, Hawaii, is another warm winter month, with an average temperature fluctuating between 69.6°F (20.9°C) and 74.7°F (23.7°C). January denotes a minimal variation in the average high-temperature to a still warm 74.7°F (23.7°C) from December's 75.4°F (24.1°C). Weather in January »Weather in February
The last month of the winter, February, is also an agreeable month in Koloa, Hawaii, with an average temperature ranging between max 73.2°F (22.9°C) and min 68.5°F (20.3°C). In Koloa, the months of February and March are known for the lowest temperatures, reaching an average high of 73.2°F (22.9°C). Weather in February »Weather in March
March, the first month of the spring in Koloa, is also an agreeable month, with an average temperature fluctuating between 73.2°F (22.9°C) and 68.9°F (20.5°C). The months of February and March bring the lowest temperatures, averaging a high of 73.2°F (22.9°C). Weather in March »Weather in April
April in Koloa, Hawaii, is a moderately hot spring month, with temperature in the range of an average low of 70.9°F (21.6°C) and an average high of 74.8°F (23.8°C). With the onset of April, the average high-temperature registers at a moderately hot 74.8°F (23.8°C), subtly different from March's 73.2°F (22.9°C). Weather in April »Weather in May
May, the last month of the spring in Koloa, is another warm month, with an average temperature fluctuating between 72.1°F (22.3°C) and 76.8°F (24.9°C). Koloa in May witnesses an average high-temperature of a still warm 76.8°F (24.9°C), indicating a slight variation from April's 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Koloa, is also a moderately hot month, with an average temperature fluctuating between 78.3°F (25.7°C) and 73.9°F (23.3°C). Koloa observes an average high-temperature of a still warm 78.3°F (25.7°C) in June, barely different from 76.8°F (24.9°C) in May. Weather in June »Weather in July
July, the same as June, is another warm summer month in Koloa, Hawaii, with an average temperature varying between 75°F (23.9°C) and 79°F (26.1°C). Koloa records an average high-temperature of a still moderately hot 79°F (26.1°C) in July, closely mirroring the climate of the previous month. Weather in July »Weather in August
August, the last month of the summer in Koloa, is also a moderately hot month, with an average temperature ranging between min 75.7°F (24.3°C) and max 79.5°F (26.4°C). August's advent presents an average high-temperature of a still warm 79.5°F (26.4°C), indicating a slight variation from the conditions of the previous month. Weather in August »Weather in September
September, the first month of the autumn in Koloa, is still a warm month, with temperature in the range of an average low of 75.9°F (24.4°C) and an average high of 79.7°F (26.5°C). Temperature readings reach their annual highs in September, averaging 79.7°F (26.5°C) and a minimum average of 75.9°F (24.4°C). Weather in September »Weather in October
October, like September, in Koloa, Hawaii, is a moderately hot autumn month, with temperature in the range of an average low of 75.4°F (24.1°C) and an average high of 79.5°F (26.4°C). In Koloa, October's average high-temperature stands at a still moderately hot 79.5°F (26.4°C), closely related to the preceding month. Weather in October »Weather in November
The last month of the autumn, November, is also a moderately hot month in Koloa, Hawaii, with an average temperature fluctuating between 74.1°F (23.4°C) and 77.2°F (25.1°C). As October turns into November, the average high-temperatures rest at a still warm 77.2°F (25.1°C), showing a minor variation from the prior month. Weather in November »Weather in December
December, the first month of the winter in Koloa, is still a warm month, with an average temperature fluctuating between 75.4°F (24.1°C) and 71.8°F (22.1°C). The introduction of December sees an average high-temperature of a still moderately hot 75.4°F (24.1°C), hardly deviating from November. Weather in December »Updated: Feb 10, 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
The least humid month is January, with an average relative humidity of 75%.
Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index.
The lowest level of Koloa's temperatures is noted during February and March, averaging a high-temperature of 73.2°F (22.9°C).
The month with the most rainfall in Koloa is March, when the rain falls for 18.6 days and typically aggregates up to 2.52" (64mm) of precipitation.
April is the month with the least rainfall. Rain falls for 18.3 days and accumulates 1.3" (33mm) of precipitation.
June through August, October and December, with an average relative humidity of 77%, are most humid months.
The month with the longest days in Koloa is June, with an average of 13h and 30min of daylight.
The month with the most sunshine in Koloa, Hawaii, is June, with an average of 9.7h of sunshine.
September, with its high-temperature average of 79.7°F (26.5°C) and a low-temperature average of 75.9°F (24.4°C), is the warmest month in Koloa, Hawaii.
With an average maximum UV index of 7, September is the month with the highest UV index in Koloa.
November has the least sunshine of the year in Koloa, Hawaii, with an average of 6.2h of sunshine.
With an average of 10h and 48min of daylight, December has the shortest days of the year in Koloa.
Koloa, Hawaii, does not utilize Daylight Saving Time (DST). HST timezone is used over the entire year.
Average temperature
Koloa, HI
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure
Koloa, HI
- Average pressure in January:
30.01"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.05"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
30"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.01"Hg - Average pressure in December:
30.01"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed
Koloa, HI
- Average wind speed in January:
10mph - Average wind speed in February:
11.1mph - Average wind speed in March:
12mph - Average wind speed in April:
11.5mph - Average wind speed in May:
10.5mph - Average wind speed in June:
12.1mph
- Average wind speed in July:
12.3mph - Average wind speed in August:
12.1mph - Average wind speed in September:
11.1mph - Average wind speed in October:
10.5mph - Average wind speed in November:
12.1mph - Average wind speed in December:
11.2mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity
Koloa, HI
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall
Koloa, HI
- Average rainfall in January:
1.57" - Average rainfall in February:
1.81" - Average rainfall in March:
2.52" - Average rainfall in April:
1.3" - Average rainfall in May:
1.57" - Average rainfall in June:
1.85"
- Average rainfall in July:
1.77" - Average rainfall in August:
1.89" - Average rainfall in September:
1.54" - Average rainfall in October:
2.05" - Average rainfall in November:
2.05" - Average rainfall in December:
2.2"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days
Koloa, HI
- Average rainfall days in January:
12.5 days - Average rainfall days in February:
15 days - Average rainfall days in March:
18.6 days - Average rainfall days in April:
18.3 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
18.8 days
- Average rainfall days in July:
20.9 days - Average rainfall days in August:
21.1 days - Average rainfall days in September:
18.7 days - Average rainfall days in October:
18.7 days - Average rainfall days in November:
19.2 days - Average rainfall days in December:
18.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average daylight / Average sunshine
Koloa, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 24min - 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 30min
- Average daylight in July:
13h and 18min - Average daylight in August:
12h and 54min - 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 48min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in January:
8h and 6min - Average sunshine in February:
7h and 42min - Average sunshine in March:
7h and 30min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 18min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
8h and 36min - Average sunshine in August:
8h and 24min - Average sunshine in September:
8h and 42min - Average sunshine in October:
8h and 24min - Average sunshine in November:
6h and 12min - Average sunshine in December:
6h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days
Koloa, HI
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
6.3 days - Average sunshine days in April:
5.7 days - Average sunshine days in May:
6.7 days - Average sunshine days in June:
5 days
- Average sunshine days in July:
3.9 days - Average sunshine days in August:
2.9 days - Average sunshine days in September:
5.3 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
4.7 days - Average sunshine days in December:
6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index
Koloa, HI
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover
Koloa, HI
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility
Koloa, 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).
