September weather forecast and climate
Öregrund, Sweden

The first month of the autumn, September, is also a moderate month in Öregrund, Sweden, with average temperature ranging between max 15.2°C (59.4°F) and min 10.8°C (51.4°F).

Temperature

In Öregrund, Sweden, the average high-temperature in September marginally drops, from an enjoyable 19.6°C (67.3°F) in August, to a mild 15.2°C (59.4°F). In Öregrund, the average low-temperature is 10.8°C (51.4°F).

Humidity

In Öregrund, the average relative humidity in September is 79%.

Rainfall

In September, the rain falls for 13.5 days. Throughout September, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Öregrund, there are 136.5 rainfall days, and 345mm (13.58") of precipitation is accumulated.

Snowfall

In Öregrund snow does not fall in June through September.

Sea temperature

In Öregrund, Sweden, the average seawater temperature is 14°C (57.2°F).
Note: Swimming in 14°C (57.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day is 12.9h.

Sunshine

The average sunshine in September is 8.3h.

UV index

In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in September in Öregrund?

In Öregrund, in September, the average high-temperature is 15.2°C (59.4°F), and the average low-temperature is 10.8°C (51.4°F).

What is the average humidity in September in Öregrund?

In September, the average relative humidity is 79%.

How much does it rain in Öregrund in September?

In September, the rain falls for 13.5 days. Throughout September, 24mm (0.94") of precipitation is accumulated.

Does it snow in Öregrund in September?

In Öregrund, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Öregrund?

In Öregrund, Sweden, snow does not fall in June through September.

How cold is the water in September in Öregrund?

In September, the average sea temperature in Öregrund is 14°C (57.2°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Öregrund have in September?

The average length of the day in September in Öregrund, Sweden, is 12.9h.

How long on average sun shines in September in Öregrund?

In September, the average sunshine in Öregrund is 8.3h.

What is the UV index intensity in September in Öregrund?

In Öregrund, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Öregrund, Sweden
  • Average high temperature in September: 15.2°C

The warmest month (with the highest average high temperature) is July (19.7°C).
Months with the lowest average high temperature are January and February (-0.1°C).

  • Average low temperature in September: 10.8°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-2.9°C).

Average pressure in September - Öregrund, Sweden
  • Average pressure in September: 1012.9mbar

The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.1mbar).

Average wind speed in September - Öregrund, Sweden
  • Average wind speed in September: 16.6km/h

The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (14.2km/h).

Average humidity in September - Öregrund, Sweden
  • Average humidity in September: 79%

The month with the highest relative humidity is February (87%).
Months with the lowest relative humidity are May and June (74%).

Average rainfall in September - Öregrund, Sweden
  • Average rainfall in September: 24mm

The wettest month (with the highest rainfall) is July (52mm).
The driest months (with the least rainfall) are February and April (16mm).

Average rainfall days in September - Öregrund, Sweden
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is August (16.5 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in September - Öregrund, Sweden
  • Average snowfall in September: 0mm

The month with the highest snowfall is March (78mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September - Öregrund, Sweden
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.4 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in September - Öregrund, Sweden
  • Average sea temperature in September: 14°C

The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is February (0.1°C).

Average daylight in September / Average sunshine in September - Öregrund, Sweden
  • Average daylight in September: 12.9h

The month with the longest days is June (Average daylight: 18.9h).
The month with the shortest days is December (Average daylight: 5.9h).

  • Average sunshine in September: 8.3h

The month with the most sunshine is June (Average sunshine: 12.7h).
The month with the least sunshine is December (Average sunshine: 2.5h).

Average sunshine days in September - Öregrund, Sweden
  • Average sunshine days in September: 14 days

The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (11.6 days).

Average UV index in September - Öregrund, Sweden
  • Average UV index in September: 3

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January and February (UV index 1).

Average cloud cover in September - Öregrund, Sweden
  • Average cloud cover in September: 42

The month with the most cloud cover is January (Cloud cover 67).
Months with the least cloud cover are July and August (Cloud cover 37).

Average visibility in September - Öregrund, Sweden
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, May, November and December (9km).