September weather forecast
Heinsheim, Germany

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September

Weather in September

The first month of the autumn, September, is still a refreshing month in Heinsheim, Germany, with an average temperature ranging between min 10°C (50°F) and max 19.7°C (67.5°F).

Temperature

In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 24.5°C (76.1°F) in August to a comfortable 19.7°C (67.5°F). During September, the nighttime temperature in Heinsheim averages of 10°C (50°F).

Humidity

The average relative humidity in September is 77%.

Rainfall

In Heinsheim, in September, it is raining for 12.5 days, with typically 33mm (1.3") of accumulated precipitation. Throughout the year, in Heinsheim, there are 175.1 rainfall days, and 581mm (22.87") of precipitation is accumulated.

Snowfall

In Heinsheim, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 36min.
On the first day of September, sunrise is at 06:40 and sunset at 20:06. On the last day of the month, sunrise is at 07:22 and sunset at 19:04 CEST.

Sunshine

In September, the average sunshine in Heinsheim is 8.7h.

UV index

In September, the average daily maximum UV index in Heinsheim is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 4 in September transforms into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Heinsheim in September?
The high-temperature, in September, in Heinsheim, records 19.7°C (67.5°F), while the low-temperature is 10°C (50°F).
What is the average humidity in September in Heinsheim?
In Heinsheim, the average relative humidity in September is 77%.
How much does it rain in Heinsheim in September?
In Heinsheim, Germany, in September, during 12.5 rainfall days, 33mm (1.3") of precipitation is typically accumulated.
When it does not snow in Heinsheim?
May through September are months without snowfall in Heinsheim.
Does it snow in Heinsheim in September?
In Heinsheim, Germany, in September, it doesn't snow. In October, it regularly snows.
What is the average length of the day in September in Heinsheim?
In September, the average day length is 12h and 36min.
When is the sunrise / sunset in September in Heinsheim?
In September, on the first day of the month, sunrise is at 06:40 and sunset at 20:06. On the last day of the month, in Heinsheim, Germany, sunrise is at 07:22 and sunset at 19:04 CEST.
How many hours of sunshine does Heinsheim have in September?
The average sunshine duration in September in Heinsheim is 8.7h.
How high is the UV index in September in Heinsheim?
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
24.5°C
19.7°C
14.3°C
Average low temperature
14°C
10°C
6.2°C
Average pressure
1016.8mbar
1018.5mbar
1018.4mbar
Average wind speed
8.4km/h
8.5km/h
9.5km/h
Average max. wind speed
9.4km/h
9km/h
10.4km/h
Average wind speed gusts
13.1km/h
13.5km/h
15.5km/h
Average humidity
72%
77%
83%
Average rainfall
55mm
33mm
36mm
Average rainfall days
17
12.5
13.7
Average snowfall
0mm
0mm
3mm
Average snowfall days
0
0
0.1
Average daylight
14h 2min
12h 4min
10h 5min
Average sunshine
10h 1min
8h 4min
5h 4min
Average sunshine days
11.3
14.5
15.2
Average UV index
5
4
3
Average cloud cover
32%
36%
43%
Average visibility
9km
9km
8km
Average temperature in September
Heinsheim, Germany
  • Average high temperature in September: 19.7°C

The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (3.1°C).

  • Average low temperature in September: 10°C

The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).

Average pressure in September
Heinsheim, Germany
  • Average pressure in September: 1018.5mbar

The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is November (1015.2mbar).

Average wind speed in September
Heinsheim, Germany
  • Average wind speed in September: 8.5km/h

The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).

Average humidity in September
Heinsheim, Germany
  • Average humidity in September: 77%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (72%).

Average rainfall in September
Heinsheim, Germany
  • Average rainfall in September: 33mm

The wettest month (with the highest rainfall) is May (72mm).
The driest month (with the least rainfall) is April (27mm).

Average rainfall days in September
Heinsheim, Germany
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (11.6 days).

Average snowfall in September
Heinsheim, Germany
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (72mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in September
Heinsheim, Germany
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Heinsheim, Germany
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Heinsheim, Germany
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (15.2 days).
The month with the least sunshine days is June (9.9 days).

Average UV index in September
Heinsheim, Germany
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Heinsheim, Germany
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Heinsheim, Germany
  • Average visibility in September: 9km

The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).

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