May weather forecastKotka, Finland

May

Weather in May

The weather in Kotka during May reveals a full-fledged spring. Daylight hours extend significantly, and sea temperatures continue to rise, averaging an inviting 7.1°C (44.8°F). The increased sunlight and warmth encourage the full bloom of flowers, transforming the city into a vibrant, blooming spectacle. Compared to the preceding months, May’s weather sets the stage for the upcoming summer.

Sea temperature

In Kotka, the average seawater temperature in May is 7.1°C (44.8°F).
Note: Dipping into 7.1°C (44.8°F) below 10°C (50°F) needs protective wear, or you'd face cold shock and breathing issues swiftly. Meanwhile, a slight swim around 13°C (55.4°F) feels cold to the bone.

Daylight

The average length of the day in May is 17h and 19min.
On the first day of the month, sunrise is at 05:05 and sunset at 21:12. On the last day of May, sunrise is at 03:57 and sunset at 22:22 EEST.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In May, the average sea temperature is 7.1°C (44.8°F). Swimming in 7.1°C (44.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

In Kotka, the average day length in May is 17h and 19min.

On the first day of May in Kotka, Finland, sunrise is at 05:05 and sunset at 21:12. On the last day of the month, sunrise is at 03:57 and sunset at 22:22 EEST.

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Average sea temperature

Average daylight

Average sea temperature in May
Kotka, Finland

Average sea temperature in May: 7.1°C

The best month for swimming (with the highest average sea temperature) is July (18.9°C).
The coldest months (with the lowest average sea temperature) are February and March (-0.2°C).

Average daylight in May
Kotka, Finland

Average daylight in May: 17h and 18min

The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).