September weather forecastKolonia, Micronesia
September
Weather in September
September in Kolonia can be characterized by steadiness in weather conditions with warmer sea temperatures. While the weather permits conducive outdoor activities, swimming becomes more appealing due to sea temperatures hitting 29.4°C (84.9°F). Despite an increase in rainfall to 189mm (7.44") from the previous month, a simultaneous increase in sunshine hours tends to balance out wet periods. Slightly greater wind speeds than in August add a pleasant coolness to city life.Temperature
With the onset of September, Kolonia greets a high temperature of a still warm 29.1°C (84.4°F), showing no significant variation from August. Kolonia experiences a steady nighttime temperature of 27.8°C (82°F) throughout the month of September.Heat index
The heat index value for September is evaluated at a hot 34°C (93.2°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
The months with the lowest humidity are August through October, with an average relative humidity of 74%.Rainfall
In Kolonia, during September, the rain falls for 25.1 days and regularly aggregates up to 189mm (7.44") of precipitation. In Kolonia, during the entire year, the rain falls for 313.2 days and collects up to 2280mm (89.76") of precipitation.Sea temperature
In Kolonia, the average seawater temperature in September is 29.4°C (84.9°F).Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.
Daylight
In September, the average length of the day is 12h and 10min.On the first day of the month, sunrise is at 06:19 and sunset at 18:34. On the last day of September, sunrise is at 06:15 and sunset at 18:19 +11.
Sunshine
In September, the average sunshine is 7.9h.UV index
January through October and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat. Warning! The Sun's UV rays intensify with reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kolonia, Micronesia
- Average high temperature in September: 29.1°C
The warmest month (with the highest average high temperature) is October (29.2°C).
The month with the lowest average high temperature is February (28.3°C).
- Average low temperature in September: 27.8°C
The months with the highest average low temperature are October, November and December (28.1°C).
The coldest month (with the lowest average low temperature) is March (27.5°C).
Average pressure in September
Kolonia, Micronesia
- Average pressure in September: 1009.3mbar
The month with the highest atmospheric pressure is May (1009.6mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Kolonia, Micronesia
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is February (27.8km/h).
The calmest month (with the lowest average wind speed) is August (13.1km/h).
Average humidity in September
Kolonia, Micronesia
- Average humidity in September: 74%
The months with the highest relative humidity are January, February, March, April and May (78%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Kolonia, Micronesia
- Average rainfall in September: 189mm
The wettest month (with the highest rainfall) is May (249mm).
The driest month (with the least rainfall) is February (130mm).
Average rainfall days in September
Kolonia, Micronesia
- Average rainfall days in September: 25.1 days
The month with the highest number of rainy days is May (28 days).
The month with the least rainy days is February (22.8 days).
Average sea temperature in September
Kolonia, Micronesia
- Average sea temperature in September: 29.4°C
The best month for swimming (with the highest average sea temperature) is November (29.8°C).
The coldest months (with the lowest average sea temperature) are February and March (28.8°C).
Average daylight in September /
Average sunshine in September
Kolonia, Micronesia
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 7h and 54min
The months with the most sunshine are August and October (Average sunshine: 8h and 0min).
The months with the least sunshine are January and March (Average sunshine: 7h and 18min).
Average sunshine days in September
Kolonia, Micronesia
- Average sunshine days in September: 4 days
The month with the most sunshine days is October (4.5 days).
The month with the least sunshine days is November (1 days).
Average UV index in September
Kolonia, Micronesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).
Average cloud cover in September
Kolonia, Micronesia
- Average cloud cover in September: 45
The months with the most cloud cover are April and May (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 44).
Average visibility in September
Kolonia, Micronesia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, October and December (10km).
The months with the lowest visibility are May, July, August, September and November (9km).
