May weather forecastSeltjarnarnes, Iceland

May

Weather in May

In May, Seltjarnarnes witnesses a significant advance into the spring season. Residents start to enjoy noticeably longer daylight hours and warmer temperatures, keeping the winter memories in the rear-view mirror. Progress in sea temperature is evident as it climbs to an average of 6.9°C (44.4°F). May holds the promise of almost summer-like weather, subtly nudging away from April's conditions. The arrival of June further emphasizes this transition, bringing along with it the vibrant summer months.

Sea temperature

In May, the average sea temperature is 6.9°C (44.4°F).
Note: Swimming in 6.9°C (44.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in May is 18h and 30min.
On the first day of May in Seltjarnarnes, sunrise is at 04:57 and sunset at 21:52. On the last day of the month, sunrise is at 03:23 and sunset at 23:28 GMT.

Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In May, the average sea temperature is 6.9°C (44.4°F). Swimming in 6.9°C (44.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

In May, the average day length in Seltjarnarnes, Iceland, is 18h and 30min.

On the first day of May in Seltjarnarnes, Iceland, sunrise is at 04:57 and sunset at 21:52. On the last day of the month, sunrise is at 03:23 and sunset at 23:28 GMT.

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Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average sea temperature

Average daylight

Average sea temperature in May
Seltjarnarnes, Iceland

Average sea temperature in May: 6.9°C

The best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).

Average daylight in May
Seltjarnarnes, Iceland

Average daylight in May: 18h and 30min

The month with the longest days is June (Average daylight: 20h and 54min).
The month with the shortest days is December (Average daylight: 4h and 24min).