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Weather in Iceland, California for May 2026

Your guide to Iceland weather in May - trends and predictions

    Official Weather Alert ⚠️

  • Lake Wind Advisory - See hour by hour.

    • Snow Forecast ❄️

  • Snowfall in Iceland during May is quite rare, with fewer than 2 snowy days on average.
    According to Iceland snow forecast for May 2026, 4 snowy days are expected until the end of the month. The closest date with snow is Tuesday, May 26.

    • Temperatures

  • Until now, May 2026 in Iceland is slightly cooler than the historical average by -1.8 °F.

  • The forecast for the upcoming days in Iceland predicts a temperature of 9.8 °F, which is slightly above the historical average.

  • In general, the average temperature in Iceland at the beginning of May is 11.7 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 9.1 °F by the end of May.

    • Rain 🌧️

  • With an average of 2 rainy days, Iceland experiences minimal rainfall in May.

    • More

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

Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
1
Snow days
Average temperatures
17°/3°
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
14°
2
Patchy rain possible
13°
3
Patchy rain possible
10°
4
Patchy rain possible
5°
5
Partly cloudy
10°
6
Sunny
15°
7
Partly cloudy
15°
8
Sunny
17°
9
Sunny
19°
10
Sunny
19°
11
Sunny
16°
12
Heavy rain at times
11°
13
Patchy moderate snow
9°
14
Cloudy
14°
15
Cloudy
14°
16
Patchy rain possible
13°
17
Moderate rain at times
7°
18
Sunny
10°
19
Sunny
14°
20
Sunny
16°
21
Sunny
21°
22
Sunny
15°
23
Sunny
16°
24
Patchy rain possible
18°
25
Weather Alert Sunny
15°
26
Patchy rain possible
5°
27
Moderate or heavy snow with thunder
5°
28
Moderate rain
4°
29
Patchy rain possible
8°
30
Sunny
12°
31
Sunny
15°

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
 14° /2° 0 mm 0 cm
May 2 Patchy rain possible
Patchy rain possible
 13° /3° 0.4 mm 0 cm
May 3 Patchy rain possible
Patchy rain possible
 10° /1° 10 mm 0.3 cm
May 4 Patchy rain possible
Patchy rain possible
 5° /0° 12.2 mm 5.5 cm
May 5 Partly cloudy
Partly cloudy
 10° /-2° 3.8 mm 2.4 cm
May 6 Sunny
Sunny
 15° /2° 0 mm 0 cm
May 7 Partly cloudy
Partly cloudy
 15° /4° 0 mm 0 cm
May 8 Sunny
Sunny
 17° /3° 0 mm 0 cm
May 9 Sunny
Sunny
 19° /4° 0 mm 0 cm
May 10 Sunny
Sunny
 19° /6° 0 mm 0 cm
May 11 Sunny
Sunny
 16° /7° 0 mm 0 cm
May 12 Heavy rain at times
Heavy rain at times
 11° /4° 2.9 mm 0 cm
May 13 Patchy moderate snow
Patchy moderate snow
 9° /1° 1.9 mm 0.2 cm
May 14 Cloudy
Cloudy
 14° /1° 0 mm 0 cm
May 15 Cloudy
Cloudy
 14° /2° 0 mm 0 cm
May 16 Patchy rain possible
Patchy rain possible
 13° /3° 0.5 mm 0 cm
May 17 Moderate rain at times
Moderate rain at times
 7° /1° 0.9 mm 0 cm
May 18 Sunny
Sunny
 10° /-1° 0 mm 0 cm
May 19 Sunny
Sunny
 14° /1° 0 mm 0 cm
May 20 Sunny
Sunny
 16° /3° 0 mm 0 cm
May 21 Sunny
Sunny
 21° /3° 0 mm 0 cm
May 22 Sunny
Sunny
 15° /6° 0.9 mm 0 cm
May 23 Sunny
Sunny
 16° /5° 0 mm 0 cm
May 24 Patchy rain possible
Patchy rain possible
 18° /7° 0.1 mm 0 cm
May 25 Sunny
Sunny
 15° /7° 0 mm 0 cm
May 26 Patchy rain possible
Patchy rain possible
 5° /-3° 0.5 mm 0.1 cm
May 27 Moderate or heavy snow with thunder
Moderate or heavy snow with thunder
 5° /-3° 11.1 mm 7.7 cm
May 28 Moderate rain
Moderate rain
 4° /-2° 6.8 mm 1.8 cm
May 29 Patchy rain possible
Patchy rain possible
 8° /-1° 3.9 mm 2.8 cm
May 30 Sunny
Sunny
 12° /6° 0 mm 0 cm
May 31 Sunny
Sunny
 15° /7° 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 3°, 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 2 days. This minimal precipitation is unlikely to significantly impact plans.

Will it snow in Iceland in May 2026?

Iceland typically sees 0.36 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 ❄️
On average, Iceland sees 1 snowy days during May, with approximately 0.4 cm of total snowfall.

May rainfall patterns in Iceland

Explore the daily rainfall trends and prepare for Icelands May weather 💧
Typically, Iceland has 2 rainy days in May with a total of 14.4 mm of rainfall.

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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