Weather in September
Temperature
June through November, with an average high-temperature of 31°C (87.8°F), are the warmest months.Rainfall
In Kwajalein, Marshall Islands, during 18 rainfall days, 270mm (10.63") of precipitation is typically accumulated. Throughout the year, there are 224 rainfall days, and 2605mm (102.56") of precipitation is accumulated.Sea temperature
The months with the warmest seawater are June through November, with an average sea temperature of 29°C (84.2°F).Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
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 18:41 +12.
Sunshine
In September, the average sunshine in Kwajalein, Marshall Islands, is 18h.UV index
February through October, with an average maximum UV index of 12, are months with the highest UV index in Kwajalein, Marshall Islands. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
FAQ
What is the warmest month in Kwajalein?
What is the temperature in September in Kwajalein?
How much does it rain in Kwajalein in September?
What are the months with the warmest sea water in Kwajalein?
What is the sea water temperature in September in Kwajalein?
What is the average length of the day in September in Kwajalein?
When are sunrise and sunset in September in Kwajalein?
How long on average sun shines in September in Kwajalein?
What is the month with the highest UV index in Kwajalein?
What is the UV index intensity 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 10min
The month with the longest days is June (Average daylight: 12h and 37min).
The month with the shortest days is December (Average daylight: 11h and 38min).
- 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).
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