September weather forecastKosrae, Micronesia
September
Weather in September
September brings another drop in rainfall, registering 288mm (11.34") as it maintains the steady descent from July's peak. The month continues with the tropical season; the temperatures, the prolong hours of sunshine, and the prominent UV index offers a vibrant outdoor experience. Simultaneously, a slight decline in daylight hours is noticeable compared to the previous months. The consistency in sea temperature ensures September remains an excellent month for marine recreation.Temperature
January through December are the warmest months in Kosrae, with an average high-temperature of 31°C (87.8°F). Lowest temperatures in Kosrae, Micronesia, are observed in January through December, averaging a high-temperature of 31°C (87.8°F).Rainfall
In Kosrae, in September, it is raining for 19 days, with typically 288mm (11.34") of accumulated precipitation. In Kosrae, during the entire year, the rain falls for 233 days and collects up to 3180mm (125.2") of precipitation.Sea temperature
The months with the warmest seawater in Kosrae are January through December, with an average sea temperature of 29°C (84.2°F). January through December, with an average sea temperature of 29°C (84.2°F), are months with the coldest seawater.Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.
Daylight
In September, the average length of the day in Kosrae is 12h and 9min.On the first day of September, sunrise is at 06:01 and sunset at 18:14. On the last day of the month, sunrise is at 05:55 and sunset at 18:00 +11.
Sunshine
In September, the average sunshine in Kosrae is 19h.UV index
The months with the highest UV index are January through November, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 12 in September translates into the following instructions:
Ensure every crucial precaution is taken. Individuals with light skin could experience burns in under 5 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Sunscreen with a sun protection factor of no less than 30 should be used liberally and reapplied frequently on overcast days, including after every swim or outdoor activity. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kosrae, Micronesia
- Average high temperature in September: 31°C
The warmest months (with the highest average high temperature) are January, February, March, April, May, June, July, August, September, October, November and December (31°C).
The months with the lowest average high temperature are January, February, March, April, May, June, July, August, September, October, November and December (31°C).
- Average low temperature in September: 24°C
The months with the highest average low temperature are January, February, March, April, May and December (25°C).
The coldest months (with the lowest average low temperature) are June, July, August, September, October and November (24°C).
Average rainfall in September
Kosrae, Micronesia
- Average rainfall in September: 288mm
The wettest month (with the highest rainfall) is July (319mm).
The driest month (with the least rainfall) is February (182mm).
Average rainfall days in September
Kosrae, Micronesia
- Average rainfall days in September: 19 days
The month with the highest number of rainy days is August (21 days).
The months with the least rainy days are May and June (18 days).
Average sea temperature in September
Kosrae, Micronesia
- Average sea temperature in September: 29°C
The best months for swimming (with the highest average sea temperature) are January, February, March, April, May, June, July, August, September, October, November and December (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May, June, July, August, September, October, November and December (29°C).
Average daylight in September /
Average sunshine in September
Kosrae, Micronesia
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).
- Average sunshine in September: 19h
The month with the most sunshine is August (Average sunshine: 21h).
The months with the least sunshine are May and June (Average sunshine: 18h).
Average UV index in September
Kosrae, Micronesia
- Average UV index in September: 12
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and November (UV index 12).
The month with the lowest UV index is December (UV index 11).





