Weather in Reykjavík for September 2025
In general, the average temperature in Reykjavík at the beginning of September is 10.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 7.7 °C by the end of September.
Expect significant rainfall in Reykjavík during September, with an average of 19 rainy days.
Is September a good time to visit Reykjavík? check out the best time to travel to Reykjavík page.
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Reykjavík in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 12° | 2 11° | 3 9° | 4 10° | 5 11° | 6 11° | 7 11° |
8 9° | 9 7° | 10 7° | 11 8° | 12 8° | 13 8° | 14 10° |
15 9° | 16 10° | 17 10° | 18 10° | 19 9° | 20 10° | 21 9° |
22 8° | 23 8° | 24 8° | 25 8° | 26 8° | 27 8° | 28 8° |
29 7° | 30 7° |
You can click on date
Temperatures trend during September in Reykjavík
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Overcast | 12° /9° | 7.3 mm | 3 | |
2 Sept. | Light rain shower | 11° /8° | 10.3 mm | 3 | |
3 Sept. | Light rain shower | 9° /6° | 3.8 mm | 3 | |
4 Sept. | Light rain shower | 10° /7° | 4.3 mm | 3 | |
5 Sept. | Overcast | 11° /8° | 6.6 mm | 3 | |
6 Sept. | Light rain shower | 11° /9° | 9.6 mm | 3 | |
7 Sept. | Light rain | 11° /8° | 10.3 mm | 3 | |
8 Sept. | Light rain shower | 9° /6° | 5.1 mm | 3 | |
9 Sept. | Light rain shower | 7° /4° | 2.6 mm | 2 | |
10 Sept. | Patchy rain possible | 7° /5° | 0.3 mm | 2 | |
11 Sept. | Partly cloudy | 8° /3° | 0 mm | 3 | |
12 Sept. | Overcast | 8° /4° | 0 mm | 2 | |
13 Sept. | Overcast | 8° /5° | 0 mm | 2 | |
14 Sept. | Partly cloudy | 10° /6° | 0.1 mm | 3 | |
15 Sept. | Overcast | 9° /5° | 0.4 mm | 3 | |
16 Sept. | Moderate rain | 10° /6° | 21 mm | 3 | |
17 Sept. | Light rain shower | 10° /7° | 9 mm | 3 | |
18 Sept. | Partly cloudy | 10° /5° | 12.2 mm | 4 | |
19 Sept. | Patchy rain possible | 9° /5° | 0.5 mm | 3 | |
20 Sept. | Partly cloudy | 10° /5° | 0.2 mm | 3 | |
21 Sept. | Sunny | 9° /5° | 0 mm | 3 | |
22 Sept. | Overcast | 8° /5° | 0.6 mm | 2 | |
23 Sept. | Light drizzle | 8° /5° | 1.3 mm | 2 | |
24 Sept. | Light rain | 8° /4° | 3.2 mm | 2 | |
25 Sept. | Cloudy | 8° /4° | 0.1 mm | 3 | |
26 Sept. | Light rain | 8° /4° | 4.6 mm | 2 | |
27 Sept. | Light rain | 8° /4° | 2.6 mm | 2 | |
28 Sept. | Patchy rain possible | 8° /5° | 0.4 mm | 2 | |
29 Sept. | Sunny | 7° /4° | 4 mm | 3 | |
30 Sept. | Light drizzle | 7° /4° | 0.6 mm | 2 | |
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Reykjavík in September - FAQ
What to pack to Reykjavík in September?
As you prepare for your trip to Reykjavík in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Reykjavík, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Reykjavík
Quick links
Get accurate weather forecasts for Reykjavík, located at latitude 64.135 and longitude -21.895. Stay updated with localized weather information tailored for Reykjavík.