Reykjavíkurborg (Reykjavík)
September
Weather in Reykjavíkurborg for September 2026
Your guide to Reykjavíkurborg weather in September - trends and predictions
Until now, September 2026 in Reykjavíkurborg is slightly cooler than the historical average by 1.1 °C.
The forecast for the next days in Reykjavíkurborg predicts temperatures to be around 10 °C, close to the historical average.
In general, the average temperature in Reykjavíkurborg at the beginning of September is 11.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 9.4 °C by the end of September.
Reykjavíkurborg in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 142.6 mm.
Temperatures
Rain 🌧️
13
Dry days
17
Rainy days
0
Snow days
10°/6°
Temperatures
27 km/h
Avg max wind
78 %
Avg humidity
Reykjavíkurborg Weather September
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Temperatures trend during September in Reykjavíkurborg
See the weather trend as well as the moving average line
September weather in Reykjavíkurborg day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 12° /9° | 4.1 mm | 3 | |
| 2 Sept. | Patchy rain possible | 13° /8° | 3.9 mm | 3 | |
| 3 Sept. |  Moderate or heavy rain shower | 11° /7° | 3.9 mm | 3 | |
| 4 Sept. | Moderate rain at times | 11° /8° | 5 mm | 3 | |
| 5 Sept. | Moderate rain at times | 12° /8° | 4.1 mm | 3 | |
| 6 Sept. | Light rain shower | 12° /8° | 4.6 mm | 3 | |
| 7 Sept. | Patchy rain possible | 11° /7° | 5.5 mm | 3 | |
| 8 Sept. | Light rain shower | 11° /7° | 3.8 mm | 3 | |
| 9 Sept. | Light rain shower | 10° /7° | 8.3 mm | 2 | |
| 10 Sept. | Patchy rain possible | 10° /7° | 5.4 mm | 2 | |
| 11 Sept. | Patchy rain possible | 10° /6° | 1.6 mm | 2 | |
| 12 Sept. |  Overcast | 10° /5° | 4.3 mm | 2 | |
| 13 Sept. | Overcast | 10° /6° | 4.3 mm | 2 | |
| 14 Sept. | Overcast | 11° /6° | 1.1 mm | 3 | |
| 15 Sept. | Patchy rain possible | 10° /5° | 1 mm | 3 | |
| 16 Sept. | Patchy rain possible | 11° /6° | 13.4 mm | 3 | |
| 17 Sept. | Overcast | 10° /6° | 4.1 mm | 2 | |
| 18 Sept. | Moderate or heavy rain shower | 10° /5° | 7.6 mm | 3 | |
| 19 Sept. | Light rain shower | 9° /8° | 4.8 mm | 1.1 | |
| 20 Sept. | Patchy rain possible | 10° /8° | 1.3 mm | 1.3 | |
| 21 Sept. | Light rain shower | 11° /9° | 8.3 mm | 0.8 | |
| 22 Sept. | Light rain shower | 10° /8° | 9.5 mm | 2 | |
| 23 Sept. | Light rain shower | 9° /8° | 5.8 mm | 3 | |
| 24 Sept. | Light rain shower | 10° /8° | 14.7 mm | 3 | |
| 25 Sept. | Patchy rain possible | 8° /6° | 1.4 mm | 2 | |
| 26 Sept. | Patchy rain possible | 8° /7° | 3.3 mm | 2 | |
| 27 Sept. | Patchy rain possible | 11° /7° | 14.3 mm | 2 | |
| 28 Sept. | Light rain shower | 11° /8° | 17 mm | 3 | |
| 29 Sept. | Patchy rain possible | 8° /5° | 0.6 mm | 2 | |
| 30 Sept. | Light rain shower | 10° /7° | 26 mm | 2 | |
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Important Notice
Our weather forecast for Reykjavíkurborg in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Reykjavíkurborg forecast closer to your planned date for the most up-to-date weather information.
Change Month
Reykjavíkurborg in September - FAQ
What are the expected maximum and minimum temperatures in Reykjavíkurborg during September?
During September, expect a variety of temperatures with highs around 10° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Reykjavíkurborg during September?
Significant rainfall exceeding 142.6 mm is expected in Reykjavíkurborg during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Reykjavíkurborg in September 2026?
Reykjavíkurborg typically sees 0 cm of snowfall during September.
What are the typical wind conditions in Reykjavíkurborg during September?
The average wind speed in Reykjavíkurborg during September is 27 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Reykjavíkurborg
Explore the daily rainfall trends and prepare for Reykjavíkurborgs September weather 💧
Typically, Reykjavíkurborg has 17 rainy days in September with a total of 142.6 mm of rainfall.
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