Onsala Weather in September

With daytime temperatures of 18°C (64°F) and nighttime lows of 11°C (52°F), September in Onsala brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 95 mm (3.7 in) falls on average.

Rainfall in Onsala in September

Looking at the last 30 years, the data shows about 14 days with rain, averaging 95 mm (3.7 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Onsala in September

In September, expect moderate temperatures in Onsala, with highs of 18°C (64°F) and lows of 11°C (52°F) at night. Conditions are often most pleasant around the middle of the day. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Onsala in September

With about 143 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Onsala.

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• January
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For a detailed overview over the year and the best time to visit Sweden, check out our Onsala's climate page.

Onsala Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 45%  

Precipitation 95 mm (3.7 in)  

Rainy days 14 days  

Humidity 75% *  

Sunshine 143 hours *  

Percentage Sunshine *  

* Data from: Falkenberg, Sweden (64 KM, 40 Miles).

What to Wear in Onsala in September

For Onsala in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Onsala in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

6/10

Walking

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sweden, check out our Onsala's climate page.

More climate data for Onsala

Temperature Rainfall Sunshine Humidity

See the full Onsala climate overview or explore weather in Sweden.