September weather forecastHeiligenhafen, Germany
September
Weather in September
September, the first month of the autumn in Heiligenhafen, is still a refreshing month, with an average temperature varying between 14.1°C (57.4°F) and 16.7°C (62.1°F).Temperature
The average high-temperature in September, at a still comfortable 16.7°C (62.1°F), reveals a modest deviation from August's 19.6°C (67.3°F). Nighttime temperature reflects an average dip to a moderate 14.1°C (57.4°F) in September, subtly cooler than its daytime highs.Humidity
The average relative humidity in September is 78%.Rainfall
In Heiligenhafen, during September, the rain falls for 17.3 days and regularly aggregates up to 51mm (2.01") of precipitation. Throughout the year, in Heiligenhafen, there are 173.4 rainfall days, and 515mm (20.28") of precipitation is accumulated.Snowfall
In Heiligenhafen, snow does not fall in May through October.Sea temperature
In September, the average sea temperature in Heiligenhafen is 16.9°C (62.4°F).Note: Swimming in water at 16.9°C (62.4°F) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Heiligenhafen is 12h and 42min.On the first day of the month, sunrise is at 06:24 and sunset at 20:07. On the last day of September, in Heiligenhafen, Germany, sunrise is at 07:17 and sunset at 18:54 CEST.
Sunshine
The average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index in Heiligenhafen is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heiligenhafen, Germany
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is February (3°C).
- Average low temperature in September: 14.1°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is February (1.1°C).
Average pressure in September
Heiligenhafen, Germany
- Average pressure in September: 1015.7mbar
The months with the highest atmospheric pressure are April, May and September (1015.7mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in September
Heiligenhafen, Germany
- Average wind speed in September: 24.3km/h
The windiest month (with the highest average wind speed) is December (29.9km/h).
The calmest month (with the lowest average wind speed) is June (20.9km/h).
Average humidity in September
Heiligenhafen, Germany
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (77%).
Average rainfall in September
Heiligenhafen, Germany
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is August (64mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Heiligenhafen, Germany
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Heiligenhafen, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (19mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Heiligenhafen, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Heiligenhafen, Germany
- Average sea temperature in September: 16.9°C
The best month for swimming (with the highest average sea temperature) is August (18.4°C).
The coldest month (with the lowest average sea temperature) is January (2.4°C).
Average daylight in September /
Average sunshine in September
Heiligenhafen, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Heiligenhafen, Germany
- Average sunshine days in September: 9.6 days
The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is November (8.6 days).
Average UV index in September
Heiligenhafen, Germany
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Heiligenhafen, Germany
- Average cloud cover in September: 45
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Heiligenhafen, Germany
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
