September weather forecastHammarland, Finland
September
Weather in September
September, the first month of the autumn in Hammarland, is still a refreshing month, with an average temperature fluctuating between 14.5°C (58.1°F) and 12.7°C (54.9°F).Temperature
September ushers in a minor alteration in Hammarland's climate, with the average high-temperature moving from August's comfortable 17.6°C (63.7°F) to a mild 14.5°C (58.1°F). September's average low-temperature in Hammarland is a fresh 12.7°C (54.9°F), reflecting a minor difference from the day's peak temperatures.Humidity
In September, the average relative humidity in Hammarland is 79%.Rainfall
In Hammarland, during September, the rain falls for 12.5 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 116.3 rainfall days, and 274mm (10.79") of precipitation is accumulated.Snowfall
In Hammarland, snow does not fall in June through September.Daylight
In Hammarland, the average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 06:36 and sunset at 20:44. On the last day of September, sunrise is at 07:45 and sunset at 19:16 EEST.
Sunshine
The average sunshine in September is 7.8h.UV index
The average daily maximum UV index in September in Hammarland is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hammarland, Finland
- Average high temperature in September: 14.5°C
The warmest month (with the highest average high temperature) is August (17.6°C).
The month with the lowest average high temperature is February (0.5°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).
Average pressure in September
Hammarland, Finland
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.4mbar).
Average wind speed in September
Hammarland, Finland
- Average wind speed in September: 25.1km/h
The windiest month (with the highest average wind speed) is December (31.7km/h).
The calmest month (with the lowest average wind speed) is July (20km/h).
Average humidity in September
Hammarland, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and October (78%).
Average rainfall in September
Hammarland, Finland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is October (32mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Hammarland, Finland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is August (14.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Hammarland, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Hammarland, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hammarland, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 2h and 12min).
Average sunshine days in September
Hammarland, Finland
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (20.5 days).
The month with the least sunshine days is December (11.1 days).
Average UV index in September
Hammarland, Finland
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and March (UV index 1).
Average cloud cover in September
Hammarland, Finland
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Hammarland, Finland
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
