January weather forecastNynäshamn, Sweden

January

Weather in January

Sea temperature

In January, the average sea temperature in Nynäshamn, Sweden, is 1.8°C (35.2°F).
Note: Within swimming, this is perceived as extraordinarily cold, dangerous, and potentially lethal. If not properly protected by insulated waterproof attire, hypothermia ensues quickly.

Daylight

In Nynäshamn, the average length of the day in January is 7h and 8min.
On the first day of January in Nynäshamn, sunrise is at 08:40 and sunset at 15:02. On the last day of the month, sunrise is at 07:59 and sunset at 16:03 CET.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Nynäshamn, in January, the average water temperature is 1.8°C (35.2°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

The average day length in January is 7h and 8min.

In January, on the first day of the month, sunrise is at 08:40 and sunset at 15:02. On the last day of the month, in Nynäshamn, Sweden, sunrise is at 07:59 and sunset at 16:03 CET.

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January

Feb

Average sea temperature

Average daylight

Average sea temperature in January
Nynäshamn, Sweden

Average sea temperature in January: 1.8°C

The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is February (1°C).

Average daylight in January
Nynäshamn, Sweden

Average daylight in January: 7h and 6min

The month with the longest days is June (Average daylight: 18h and 18min).
The month with the shortest days is December (Average daylight: 6h and 24min).