Grundarfjörður
September
Weather in Grundarfjörður for September 2025
Your guide to Grundarfjörður weather in September - trends and predictions
In general, the average temperature in Grundarfjörður at the beginning of September is 9.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 4.4 °C by the end of September.
Grundarfjörður in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 111.3 mm.
Temperatures
Rain 🌧️
14
Dry days
16
Rainy days
0
Snow days
7°/4°
Temperatures
26 km/h
Avg max wind
77 %
Avg humidity
Grundarfjörður Weather September
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Temperatures trend during September in Grundarfjörður
See the weather trend as well as the moving average line
September weather in Grundarfjörður day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Heavy rain at times | 11° /8° | 7.3 mm | 3 | |
| 2 Sept. | Heavy rain at times | 9° /8° | 6.9 mm | 2 | |
| 3 Sept. |  Cloudy | 8° /6° | 0 mm | 2 | |
| 4 Sept. |  Moderate or heavy rain shower | 10° /5° | 19.8 mm | 3 | |
| 5 Sept. | Moderate rain at times | 11° /8° | 16.4 mm | 3 | |
| 6 Sept. | Moderate rain at times | 10° /8° | 8.2 mm | 3 | |
| 7 Sept. |  Overcast | 10° /7° | 0.2 mm | 3 | |
| 8 Sept. | Moderate rain at times | 7° /3° | 2 mm | 2 | |
| 9 Sept. |  Patchy rain possible | 5° /3° | 0.6 mm | 2 | |
| 10 Sept. | Overcast | 6° /4° | 0.2 mm | 2 | |
| 11 Sept. |  Sunny | 6° /4° | 0 mm | 3 | |
| 12 Sept. | Patchy rain possible | 8° /5° | 0.6 mm | 2 | |
| 13 Sept. | Overcast | 8° /4° | 0 mm | 2 | |
| 14 Sept. | Overcast | 8° /4° | 0 mm | 2 | |
| 15 Sept. | Overcast | 7° /3° | 0 mm | 2 | |
| 16 Sept. | Heavy rain at times | 8° /4° | 9.3 mm | 2 | |
| 17 Sept. | Overcast | 7° /6° | 5.5 mm | 2 | |
| 18 Sept. | Moderate or heavy rain shower | 6° /4° | 16.7 mm | 2 | |
| 19 Sept. | Overcast | 8° /3° | 0 mm | 2 | |
| 20 Sept. | Overcast | 9° /4° | 0 mm | 2 | |
| 21 Sept. | Patchy rain possible | 8° /6° | 0.6 mm | 2 | |
| 22 Sept. | Patchy rain possible | 7° /4° | 0.2 mm | 2 | |
| 23 Sept. | Sunny | 7° /3° | 0 mm | 3 | |
| 24 Sept. | Patchy rain possible | 7° /3° | 0.1 mm | 2 | |
| 25 Sept. | Overcast | 4° /2° | 0 mm | 1 | |
| 26 Sept. | Patchy rain possible | 4° /2° | 1.1 mm | 1 | |
| 27 Sept. | Patchy rain possible | 4° /2° | 1.5 mm | 1 | |
| 28 Sept. | Moderate rain at times | 4° /1° | 7.7 mm | 1 | |
| 29 Sept. | Moderate rain at times | 5° /3° | 6.4 mm | 2 | |
| 30 Sept. | Patchy rain possible | 3° /2° | 0 mm | 1 | |
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Important Notice
Our weather forecast for Grundarfjörður 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 Grundarfjörður forecast closer to your planned date for the most up-to-date weather information.
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Grundarfjörður in September - FAQ
What are the expected maximum and minimum temperatures in Grundarfjörður during September?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 4°.
How much rainfall should be expected in Grundarfjörður during September?
Significant rainfall exceeding 111.3 mm is expected in Grundarfjörður during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Grundarfjörður in September 2025?
Grundarfjörður typically sees 0 cm of snowfall during September.
What are the typical wind conditions in Grundarfjörður during September?
The average wind speed in Grundarfjörður during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grundarfjörður
Explore the daily rainfall trends and prepare for Grundarfjörðurs September weather 💧
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