Weather in September
Temperature
Kwajalein's warmest months, June through November, record an average high-temperature of 31°C (87.8°F).Rainfall
In Kwajalein, Marshall Islands, in September, during 18 rainfall days, 270mm (10.63") of precipitation is typically accumulated. In Kwajalein, during the entire year, the rain falls for 224 days and collects up to 2605mm (102.56") of precipitation.Sea temperature
June through November, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.
Daylight
In Kwajalein, the average length of the day in September is 12h and 10min.On the first day of September in Kwajalein, sunrise is at 06:40 and sunset at 18:57. On the last day of the month, sunrise is at 06:37 and sunset at 18:40 +12.
Sunshine
In Kwajalein, the average sunshine in September is 18h.UV index
February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 12 translates into the following recommendations:
Utilize all vital precautions. Guarding against sun harm is non-negotiable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Despite the cloud cover, sunscreen with an SPF of at least 30 should be generously applied and reapplied, particularly after a swim or an outdoor workout. Attention! UV strength is notably upped by the reflection of sand and water.
Frequently asked questions
What are the warmest months in Kwajalein?
Is it hot in Kwajalein during September?
How much does it rain in Kwajalein in September?
What months are the sea warmest in Kwajalein?
What is the sea water temperature in September in Kwajalein?
How many hours of daylight does Kwajalein have in September?
What time are sunrise and sunset in September in Kwajalein?
How many hours of sunshine does Kwajalein have in September?
What is the month with the highest UV index in Kwajalein?
How high is the UV index in September in Kwajalein?
Average temperature in September
Kwajalein, Marshall Islands
- Average high temperature in September: 31°C
The warmest months (with the highest average high temperature) are June, July, August, September, October and November (31°C).
The months with the lowest average high temperature are January, February, March, April, May and December (30°C).
- Average low temperature in September: 25°C
The months with the highest average low temperature are January, February, March, April, May, June, July, August, September, October, November and December (25°C).
The coldest months (with the lowest average low temperature) are January, February, March, April, May, June, July, August, September, October, November and December (25°C).
Average rainfall in September
Kwajalein, Marshall Islands
- Average rainfall in September: 270mm
The wettest month (with the highest rainfall) is October (282mm).
The driest month (with the least rainfall) is February (123mm).
Average rainfall days in September
Kwajalein, Marshall Islands
- Average rainfall days in September: 18 days
The month with the highest number of rainy days is January (21 days).
The month with the least rainy days is June (16 days).
Average sea temperature in September
Kwajalein, Marshall Islands
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are June, July, August, September, October and November (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May and December (28°C).
Average daylight in September /
Average sunshine in September
Kwajalein, Marshall Islands
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 18h
The month with the most sunshine is January (Average sunshine: 21h).
The month with the least sunshine is June (Average sunshine: 16h).
Average UV index in September
Kwajalein, Marshall Islands
- Average UV index in September: 12
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).
Kwajalein, Marshall Islands
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