Fossatún Weather in September

September in Fossatún averages 11°C (52°F) during the day and 5°C (41°F) at night. Quite a bit of rainfall is typical this month, with around 133 mm (5.2 in) on average. An umbrella is a good idea.

Rainfall in Fossatún in September

You can expect rain on roughly 17 days based on historical data, averaging 133 mm (5.2 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Fossatún in September

In September, expect low temperatures in Fossatún, with highs of 11°C (52°F) and lows of 5°C (41°F) at night. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Fossatún in September

With about 121 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

September in Fossatún can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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

Fossatún Temperature in September

Min Temperature 5°C (41°F)  

Max Temperature 11°C (52°F)  

Chance of Rain 58%  

Precipitation 133 mm (5.2 in)  

Rainy days 17 days  

Humidity 79% *  

Sunshine 121 hours *  

Percentage Sunshine 30% *  

* Data from: Reykjavík, Iceland (53 KM, 33 Miles).

What to Wear in Fossatún in September

The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Fossatún in September

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

5/10

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 Iceland, check out our Fossatún's climate page.

More climate data for Fossatún

Temperature Rainfall Sunshine Humidity

See the full Fossatún climate overview or explore weather in Iceland.