easeweather.com
Grundarfjarðarbær (Grundarfjörður)
AkureyriGrundarfjörðurHellaHöfnKeflavíkKópavogurReykjavíkSeyðisfjörðurVík í MýrdalÍsafjörður More Locations
Iceland weather

Weather in Grundarfjarðarbær for September 2025

Your guide to Grundarfjarðarbær weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Grundarfjarðarbær has been nearly identical to the historical average, with a temperature of 9.4 °C (showing only a slight deviation of 0.3 °C).

  • The forecast for the next days in Grundarfjarðarbær predicts temperatures to be around 8 °C, close to the historical average.

  • In general, the average temperature in Grundarfjarðarbær at the beginning of September is 10 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6 °C by the end of September.

    • Rain 🌧️

  • The climate of Grundarfjarðarbær in September is notably wet, with an average of 13 rainy days, and a total of 111.3 mm of precipitation.

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
7°/4°
Temperatures
Average wind speed
25 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
10°
3
Cloudy
9°
4
Moderate or heavy rain shower
10°
5
Moderate rain at times
11°
6
Moderate rain at times
10°
7
Overcast
9°
8
Moderate rain at times
8°
9
Patchy rain possible
7°
10
Overcast
8°
11
Sunny
9°
12
Patchy rain possible
8°
13
Overcast
8°
14
Patchy rain possible
11°
15
Patchy rain possible
11°
16
Partly cloudy
12°
17
Overcast
6°
18
Patchy rain possible
5°
19
Partly cloudy
6°
20
Partly cloudy
6°
21
Partly cloudy
6°
22
Sunny
7°
23
Sunny
9°
24
Cloudy
10°
25
Patchy rain possible
8°
26
Patchy rain possible
8°
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° 3.9 mm 3
2 Sept. Heavy rain at times
Heavy rain at times
 10° /8° 3.5 mm 3
3 Sept. Cloudy
Cloudy
 9° /7° 0 mm 2
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /6° 12.3 mm 3
5 Sept. Moderate rain at times
Moderate rain at times
 11° /7° 14.1 mm 3
6 Sept. Moderate rain at times
Moderate rain at times
 10° /7° 5.4 mm 3
7 Sept. Overcast
Overcast
 9° /6° 5 mm 3
8 Sept. Moderate rain at times
Moderate rain at times
 8° /4° 7.3 mm 2
9 Sept. Patchy rain possible
Patchy rain possible
 7° /5° 0.6 mm 2
10 Sept. Overcast
Overcast
 8° /6° 4.1 mm 3
11 Sept. Sunny
Sunny
 9° /6° 0.6 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 8° /5° 1.6 mm 2
13 Sept. Overcast
Overcast
 8° /4° 0 mm 2
14 Sept. Patchy rain possible
Patchy rain possible
 11° /6° 4.1 mm 0.1
15 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 2 mm 0.3
16 Sept. Partly cloudy
Partly cloudy
 12° /8° 0 mm 0.3
17 Sept. Overcast
Overcast
 6° /5° 0 mm 0.2
18 Sept. Patchy rain possible
Patchy rain possible
 5° /4° 0.1 mm 1
19 Sept. Partly cloudy
Partly cloudy
 6° /2° 0 mm 2
20 Sept. Partly cloudy
Partly cloudy
 6° /3° 0 mm 2
21 Sept. Partly cloudy
Partly cloudy
 6° /4° 0 mm 3
22 Sept. Sunny
Sunny
 7° /4° 0 mm 3
23 Sept. Sunny
Sunny
 9° /4° 0 mm 3
24 Sept. Cloudy
Cloudy
 10° /8° 0 mm 2
25 Sept. Patchy rain possible
Patchy rain possible
 8° /6° 3.7 mm 2
26 Sept. Patchy rain possible
Patchy rain possible
 8° /4° 0.6 mm 2
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.
Change Month
‹
›

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 13 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 25 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 💧
Top locations in Grundarfjarðarbær
Select a location for an accurate weather forecast
Grundarfjörður
More Locations

Quick links

More Grundarfjarðarbær weather pages
You are here
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.

Found a mistake?
We appreciate your attention to details. Tell us here.