Upplands-Väsby Weather in September

Upplands-Väsby in September sees moderate daytime temperatures of 17°C (63°F) and nighttime lows of 8°C (46°F). Moderate rainfall is typical, with around 56 mm (2.2 in) for the month.

Rainfall in Upplands-Väsby in September

Records from the past 30 years suggest around 15 days of rain, with 56 mm (2.2 in) average for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Upplands-Väsby in September

Upplands-Väsby in September gets highs of 17°C (63°F) during the day and drops to 8°C (46°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Upplands-Väsby in September

The area experiences a moderate amount of sunshine, with approximately 171 hours of sunlight expected. This means a decent mix of sun and overcast.

Wind Speed in Upplands-Väsby in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in September

The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

Should you favor a climate that's both dry and comfortably warm, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Upplands-Väsby Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 17°C (63°F)  

Water Temperature 15°C (59°F) *  

Chance of Rain 49%  

Precipitation 56 mm (2.2 in)  

Rainy days 15 days  

Humidity 78% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 171 hours *  

Percentage Sunshine *  

* Data from: Stockholm, Sweden (18 KM, 11 Miles).

What to Wear in Upplands-Väsby in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Upplands-Väsby 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

Barbeque

6/10

Camping

4/10

Outdoor sports

10/10

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 Upplands-Väsby's climate page.

More climate data for Upplands-Väsby

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Upplands-Väsby climate overview or explore weather in Sweden.