Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, Baltrum's average high-temperature slightly adjusts, moderately receding from August's pleasant 21.3°C (70.3°F) to a comfortable 17.9°C (64.2°F). September witnesses an average nighttime temperature of 11.8°C (53.2°F).Humidity
In Baltrum, the average relative humidity in September is 81%.Rainfall
In Baltrum, during September, the rain falls for 17.8 days and regularly aggregates up to 43mm (1.69") of precipitation. In Baltrum, during the entire year, the rain falls for 206 days and collects up to 585mm (23.03") of precipitation.Snowfall
May through October are months without snowfall in Baltrum.Sea temperature
In Baltrum, the average seawater temperature in September is 17.7°C (63.9°F).Note: Swimming in water at 17.7°C (63.9°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 Baltrum, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 06:40 and sunset at 20:20. On the last day of September, in Baltrum, sunrise is at 07:31 and sunset at 19:09 CEST.
Sunshine
The average sunshine in September is 7.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. It's recommended to limit sun exposure when its radiation is at its peak during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the usual temperature for Baltrum in September?
What is the average humidity in September in Baltrum?
How much does it rain in Baltrum in September?
When it does not snow in Baltrum?
What is the sea temperature in September in Baltrum?
How many hours of daylight does Baltrum have in September?
When are sunrise and sunset in September in Baltrum?
How many hours of sunshine does Baltrum have in September?
What is the UV index reading in September in Baltrum?
Average temperature in September
Baltrum, Germany
- Average high temperature in September: 17.9°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is August (14.1°C).
The coldest months (with the lowest average low temperature) are January and February (0.8°C).
Average pressure in September
Baltrum, Germany
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Baltrum, Germany
- Average wind speed in September: 15.8km/h
The windiest month (with the highest average wind speed) is December (22.2km/h).
The calmest month (with the lowest average wind speed) is August (14.7km/h).
Average humidity in September
Baltrum, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are April and August (79%).
Average rainfall in September
Baltrum, Germany
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Baltrum, Germany
- Average rainfall days in September: 17.8 days
The month with the highest number of rainy days is August (21.2 days).
The month with the least rainy days is February (13.3 days).
Average snowfall in September
Baltrum, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (36mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Baltrum, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Baltrum, Germany
- Average sea temperature in September: 17.7°C
The best month for swimming (with the highest average sea temperature) is August (18.1°C).
The coldest months (with the lowest average sea temperature) are January, February and March (5.1°C).
Average daylight in September /
Average sunshine in September
Baltrum, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Baltrum, Germany
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is April (14.2 days).
The month with the least sunshine days is December (6.7 days).
Average UV index in September
Baltrum, Germany
- 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, November and December (UV index 2).
Average cloud cover in September
Baltrum, Germany
- Average cloud cover in September: 48
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 41).
Average visibility in September
Baltrum, Germany
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Baltrum, Germany
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