Nynäshamn
Sweden
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Nynäshamn, Sweden

In Nynäshamn, Sweden, the average seawater temperature in January is 1.8°C (35.2°F). Note: For swimming, this is considered life-threatening and very dangerous. Weather in January »

February is the month with the coldest seawater in Nynäshamn, Sweden, with an average sea temperature of 1°C (33.8°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

In Nynäshamn, Sweden, the average seawater temperature in March is 1.2°C (34.2°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

In Nynäshamn, Sweden, the average seawater temperature in April is 3.2°C (37.8°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in April »

In May, the average sea temperature in Nynäshamn, Sweden, is 7.8°C (46°F). Note: Swimming in 7.8°C (46°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in May »

In Nynäshamn, Sweden, the average seawater temperature in June is 14.1°C (57.4°F). Note: Swimming in 14.1°C (57.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in June »

In July, the average sea temperature in Nynäshamn, Sweden, is 18.1°C (64.6°F). Note: For most, swimming in 18.1°C (64.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F). Weather in July »

August is the month with the warmest seawater in Nynäshamn, Sweden, with an average sea temperature of 18.7°C (65.7°F). Note: Swimming in 18.7°C (65.7°F) is not enjoyable for the majority. Weather in August »

In Nynäshamn, Sweden, the average seawater temperature in September is 14.8°C (58.6°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in September »

In Nynäshamn, Sweden, in October, the average water temperature is 9.9°C (49.8°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in October »

In Nynäshamn, Sweden, the average seawater temperature in November is 7.1°C (44.8°F). Note: 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. Weather in November »

In December, the average sea temperature in Nynäshamn, Sweden, is 4.8°C (40.6°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in December »

What is the month with the coldest sea water in Nynäshamn?

With an average sea temperature of 1°C (33.8°F), February is the month with the coldest seawater in Nynäshamn, Sweden.

When are the longest days in Nynäshamn?

With an average of 18.4h of daylight, June has the longest days of the year in Nynäshamn.

When is the sea warmest in Nynäshamn?

With an average sea temperature of 18.7°C (65.7°F), August is the month with the warmest seawater in Nynäshamn, Sweden.

What is the month with the shortest days in Nynäshamn?

The month with the shortest days in Nynäshamn, Sweden, is December, with an average of 6.4h of daylight.
Average sea temperature - Nynäshamn, Sweden

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 - Nynäshamn, Sweden

The month with the longest days is June (Average daylight: 18.4h).
The month with the shortest days is December (Average daylight: 6.4h).