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Weather in Keflavík for September 2027

Your guide to Keflavík weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Keflavík at the beginning of September is 10.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 8.8 °C by the end of September.

    • Rain 🌧️

  • Keflavík in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 134.6 mm.

    • More

  • Is September a good time to visit Keflavík? check out the best time to travel to Keflavík page.

Average dry days
13
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
9°/7°
Temperatures
Average wind speed
38 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Keflavík Weather September

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

Temperatures trend during September in Keflavík

See the weather trend as well as the moving average line

September weather in Keflavík day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain
Light rain
 11° /9° 2.5 mm 2
2 Sept. Patchy rain possible
Patchy rain possible
 11° /9° 2.1 mm 2
3 Sept. Light rain
Light rain
 10° /7° 4 mm 2
4 Sept. Light rain
Light rain
 10° /8° 3.5 mm 2
5 Sept. Light rain
Light rain
 11° /9° 3.4 mm 2.7
6 Sept. Light rain
Light rain
 10° /9° 4 mm 2
7 Sept. Moderate rain
Moderate rain
 10° /9° 8.3 mm 2.6
8 Sept. Light rain
Light rain
 10° /7° 6.9 mm 2
9 Sept. Light rain shower
Light rain shower
 9° /7° 2.4 mm 2
10 Sept. Light rain
Light rain
 9° /7° 8.3 mm 2
11 Sept. Light rain
Light rain
 9° /7° 2.8 mm 2
12 Sept. Overcast
Overcast
 10° /7° 0 mm 2
13 Sept. Patchy rain possible
Patchy rain possible
 9° /7° 1.8 mm 2
14 Sept. Overcast
Overcast
 10° /8° 0.6 mm 2
15 Sept. Overcast
Overcast
 9° /8° 0.8 mm 2
16 Sept. Moderate rain
Moderate rain
 11° /8° 20.5 mm 2
17 Sept. Light rain
Light rain
 10° /7° 3.8 mm 1.9
18 Sept. Light rain
Light rain
 9° /7° 4 mm 1.8
19 Sept. Patchy rain possible
Patchy rain possible
 9° /7° 0.5 mm 1.8
20 Sept. Partly cloudy
Partly cloudy
 9° /6° 0.4 mm 1.7
21 Sept. Light rain
Light rain
 10° /7° 4.1 mm 1.7
22 Sept. Patchy rain possible
Patchy rain possible
 9° /7° 1.8 mm 1.6
23 Sept. Light rain
Light rain
 9° /8° 5 mm 1.6
24 Sept. Light rain
Light rain
 9° /6° 8.9 mm 1.5
25 Sept. Light rain
Light rain
 9° /7° 5 mm 1.4
26 Sept. Light rain
Light rain
 8° /7° 8.9 mm 1.4
27 Sept. Light rain
Light rain
 8° /6° 2.8 mm 1.3
28 Sept. Patchy rain possible
Patchy rain possible
 9° /7° 1.4 mm 1.3
29 Sept. Moderate rain
Moderate rain
 9° /7° 10.3 mm 1.2
30 Sept. Light rain
Light rain
 10° /8° 5.7 mm 1.2
Next
Important Notice
Our weather forecast for Keflavík 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 Keflavík forecast closer to your planned date for the most up-to-date weather information.
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Keflavík in September - FAQ

What are the expected maximum and minimum temperatures in Keflavík during September?
During September, expect a variety of temperatures with highs around 9° and lows near 7°, suitable for diverse activities and preferences.

How much rainfall should be expected in Keflavík during September?
Significant rainfall exceeding 134.6 mm is expected in Keflavík during September, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Keflavík in September 2027?
Keflavík typically sees 0 cm of snowfall during September.

What are the typical wind conditions in Keflavík during September?
The average wind speed in Keflavík during September is 38 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Keflavík

Explore the daily rainfall trends and prepare for Keflavíks September weather 💧
Typically, Keflavík has 17 rainy days in September with a total of 134.6 mm of rainfall.
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Location coordinates Where is Keflavík?

Get accurate weather forecasts for Keflavík, located at latitude 64.005 and longitude -22.562. Stay updated with localized weather information tailored for Keflavík.

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