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Grundarfjarðarbær (Grundarfjörður)
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Iceland weather

Weather in Grundarfjarðarbær for September 2025

Your guide to Grundarfjarðarbær weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Grundarfjarðarbær 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.

    • Rain 🌧️

  • Grundarfjarðarbær in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 111.3 mm.

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
7°/4°
Temperatures
Average wind speed
26 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Grundarfjarðarbær Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Heavy rain at times
11°
2
Heavy rain at times
9°
3
Cloudy
8°
4
Moderate or heavy rain shower
10°
5
Moderate rain at times
11°
6
Moderate rain at times
10°
7
Overcast
10°
8
Moderate rain at times
7°
9
Patchy rain possible
5°
10
Overcast
6°
11
Sunny
6°
12
Patchy rain possible
8°
13
Overcast
8°
14
Overcast
8°
15
Overcast
7°
16
Heavy rain at times
8°
17
Overcast
7°
18
Moderate or heavy rain shower
6°
19
Overcast
8°
20
Overcast
9°
21
Patchy rain possible
8°
22
Patchy rain possible
7°
23
Sunny
7°
24
Patchy rain possible
7°
25
Overcast
4°
26
Patchy rain possible
4°
27
Patchy rain possible
4°
28
Moderate rain at times
4°
29
Moderate rain at times
5°
30
Patchy rain possible
3°

Temperatures trend during September in Grundarfjarðarbær

See the weather trend as well as the moving average line

September weather in Grundarfjarðarbær day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Heavy rain at times
Heavy rain at times
 11° /8° 7.3 mm 3
2 Sept. Heavy rain at times
Heavy rain at times
 9° /8° 6.9 mm 2
3 Sept. Cloudy
Cloudy
 8° /6° 0 mm 2
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /5° 19.8 mm 3
5 Sept. Moderate rain at times
Moderate rain at times
 11° /8° 16.4 mm 3
6 Sept. Moderate rain at times
Moderate rain at times
 10° /8° 8.2 mm 3
7 Sept. Overcast
Overcast
 10° /7° 0.2 mm 3
8 Sept. Moderate rain at times
Moderate rain at times
 7° /3° 2 mm 2
9 Sept. Patchy rain possible
Patchy rain possible
 5° /3° 0.6 mm 2
10 Sept. Overcast
Overcast
 6° /4° 0.2 mm 2
11 Sept. Sunny
Sunny
 6° /4° 0 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 8° /5° 0.6 mm 2
13 Sept. Overcast
Overcast
 8° /4° 0 mm 2
14 Sept. Overcast
Overcast
 8° /4° 0 mm 2
15 Sept. Overcast
Overcast
 7° /3° 0 mm 2
16 Sept. Heavy rain at times
Heavy rain at times
 8° /4° 9.3 mm 2
17 Sept. Overcast
Overcast
 7° /6° 5.5 mm 2
18 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 6° /4° 16.7 mm 2
19 Sept. Overcast
Overcast
 8° /3° 0 mm 2
20 Sept. Overcast
Overcast
 9° /4° 0 mm 2
21 Sept. Patchy rain possible
Patchy rain possible
 8° /6° 0.6 mm 2
22 Sept. Patchy rain possible
Patchy rain possible
 7° /4° 0.2 mm 2
23 Sept. Sunny
Sunny
 7° /3° 0 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 7° /3° 0.1 mm 2
25 Sept. Overcast
Overcast
 4° /2° 0 mm 1
26 Sept. Patchy rain possible
Patchy rain possible
 4° /2° 1.1 mm 1
27 Sept. Patchy rain possible
Patchy rain possible
 4° /2° 1.5 mm 1
28 Sept. Moderate rain at times
Moderate rain at times
 4° /1° 7.7 mm 1
29 Sept. Moderate rain at times
Moderate rain at times
 5° /3° 6.4 mm 2
30 Sept. Patchy rain possible
Patchy rain possible
 3° /2° 0 mm 1
Next
Important Notice
Our weather forecast for Grundarfjarðarbær 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 Grundarfjarðarbær forecast closer to your planned date for the most up-to-date weather information.
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Grundarfjarðarbær in September - FAQ

What are the expected maximum and minimum temperatures in Grundarfjarðarbær during September?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 4°.
How much rainfall should be expected in Grundarfjarðarbær during September?
Significant rainfall exceeding 111.3 mm is expected in Grundarfjarðarbær during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Grundarfjarðarbær in September 2025?
Grundarfjarðarbær typically sees 0 cm of snowfall during September.
What are the typical wind conditions in Grundarfjarðarbær during September?
The average wind speed in Grundarfjarðarbær during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Grundarfjarðarbær

Explore the daily rainfall trends and prepare for Grundarfjarðarbærs September weather 💧
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Location coordinates Where is Grundarfjarðarbær?

Get accurate weather forecasts for Grundarfjarðarbær, located at latitude 64.924 and longitude -23.263. Stay updated with localized weather information tailored for Grundarfjarðarbær.

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