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Weather in Iceland, California for May 2026

Your guide to Iceland weather in May - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Iceland during May is quite rare, with fewer than 2 snowy days on average.

    • Temperatures

  • In general, the average temperature in Iceland at the beginning of May is 13.7 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 23.3 °F by the end of May.

    • Rain 🌧️

  • Iceland experiences moderate rainfall in May, with an average of 6 rainy days and a total precipitation of 14.4 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
1
Snow days
Average temperatures
17°/4°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
56 %
Avg humidity

Iceland Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
17°
2
Patchy rain possible
16°
3
Patchy rain possible
11°
4
Patchy rain possible
8°
5
Partly cloudy
12°
6
Sunny
16°
7
Partly cloudy
16°
8
Sunny
20°
9
Sunny
22°
10
Sunny
21°
11
Sunny
14°
12
Heavy rain at times
4°
13
Patchy moderate snow
7°
14
Cloudy
12°
15
Cloudy
14°
16
Patchy rain possible
15°
17
Moderate rain at times
9°
18
Sunny
13°
19
Sunny
18°
20
Sunny
18°
21
Sunny
21°
22
Sunny
17°
23
Sunny
17°
24
Patchy rain possible
20°
25
Fog
20°
26
Overcast
19°
27
Thundery outbreaks possible
22°
28
Mist
23°
29
Overcast
22°
30
Partly cloudy
28°
31
Partly cloudy
29°

Temperatures trend during May in Iceland

See the weather trend as well as the moving average line

May weather in Iceland day by day

Click on a date for more information
April June
Date Weather Temperatures Rain Snow More
May 1 Sunny
Sunny
 17° /1° 0 mm 0 cm
May 2 Patchy rain possible
Patchy rain possible
 16° /0° 0.3 mm 0 cm
May 3 Patchy rain possible
Patchy rain possible
 11° /1° 0.9 mm 0 cm
May 4 Patchy rain possible
Patchy rain possible
 8° /2° 0.7 mm 0 cm
May 5 Partly cloudy
Partly cloudy
 12° /-1° 0 mm 0 cm
May 6 Sunny
Sunny
 16° /0° 0 mm 0 cm
May 7 Partly cloudy
Partly cloudy
 16° /1° 0 mm 0 cm
May 8 Sunny
Sunny
 20° /1° 0 mm 0 cm
May 9 Sunny
Sunny
 22° /2° 0 mm 0 cm
May 10 Sunny
Sunny
 21° /4° 0 mm 0 cm
May 11 Sunny
Sunny
 14° /4° 0 mm 0 cm
May 12 Heavy rain at times
Heavy rain at times
 4° /-1° 5.8 mm 0 cm
May 13 Patchy moderate snow
Patchy moderate snow
 7° /-2° 3.8 mm 0.4 cm
May 14 Cloudy
Cloudy
 12° /-1° 0 mm 0 cm
May 15 Cloudy
Cloudy
 14° /-1° 0 mm 0 cm
May 16 Patchy rain possible
Patchy rain possible
 15° /4° 0.9 mm 0 cm
May 17 Moderate rain at times
Moderate rain at times
 9° /3° 1.8 mm 0 cm
May 18 Sunny
Sunny
 13° /0° 0 mm 0 cm
May 19 Sunny
Sunny
 18° /0° 0 mm 0 cm
May 20 Sunny
Sunny
 18° /1° 0 mm 0 cm
May 21 Sunny
Sunny
 21° /3° 0 mm 0 cm
May 22 Sunny
Sunny
 17° /5° 0 mm 0 cm
May 23 Sunny
Sunny
 17° /3° 0 mm 0 cm
May 24 Patchy rain possible
Patchy rain possible
 20° /6° 0.2 mm 0 cm
May 25 Fog
Fog
 20° /8° 0 mm 0 cm
May 26 Overcast
Overcast
 19° /7° 0 mm 0 cm
May 27 Thundery outbreaks possible
Thundery outbreaks possible
 22° /8° 0 mm 0 cm
May 28 Mist
Mist
 23° /9° 0 mm 0 cm
May 29 Overcast
Overcast
 22° /10° 0 mm 0 cm
May 30 Partly cloudy
Partly cloudy
 28° /14° 0 mm 0 cm
May 31 Partly cloudy
Partly cloudy
 29° /17° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Iceland in May 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 Iceland forecast closer to your planned date for the most up-to-date weather information.
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Iceland in May - FAQ

What are the expected maximum and minimum temperatures in Iceland during May?
During May, expect a variety of temperatures with highs around 17° and lows near 4°, suitable for diverse activities and preferences.
How much rainfall should be expected in Iceland during May?
Expect minimal rainfall in Iceland during May, with a total of 14.4 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Iceland in May 2026?
Iceland typically sees 0.4 cm of snowfall during May.
What are the typical wind conditions in Iceland during May?
The average wind speed in Iceland during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

Iceland snow forecast May 2026

Track daily snowfall levels and discover Iceland’s snowy potential this May ❄️

May rainfall patterns in Iceland

Explore the daily rainfall trends and prepare for Icelands May weather 💧

UV exposure in Iceland during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

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Location coordinates Where is Iceland?

Get accurate weather forecasts for Iceland, located at latitude 39.375 and longitude -120.026. Stay updated with localized weather information tailored for Iceland.

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