Sea Temperature in Norrtalje in September

Complete information on the sea temperature range in the Baltic Sea in Norrtalje in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Norrtalje. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Norrtalje in September

9°C

MINIMUN

13.5°C

AVERAGE

18°C

MAXIMUM

Historical Data of Water Temperature in September in Norrtalje

Water Temperature Chart for Baltic Sea in Norrtalje in September

Sea Temperature Table in Norrtalje in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	14°C	17°C	16°C	15.5°C
Sep 2	16°C	17°C	16°C	16.0°C
Sep 3	14°C	17°C	16°C	15.5°C
Sep 4	15°C	16°C	16°C	15.5°C
Sep 5	15°C	16°C	16°C	15.5°C
Sep 6	15°C	16°C	14°C	15.3°C
Sep 7	15°C	15°C	14°C	15.0°C
Sep 8	15°C	15°C	14°C	15.0°C
Sep 9	15°C	15°C	14°C	14.8°C
Sep 10	14°C	15°C	14°C	14.8°C
Sep 11	15°C	14°C	14°C	14.5°C
Sep 12	15°C	14°C	14°C	14.8°C
Sep 13	15°C	14°C	14°C	14.5°C
Sep 14	14°C	13°C	14°C	14.0°C
Sep 15	15°C	13°C	14°C	14.0°C
Sep 16	14°C	13°C	14°C	13.8°C
Sep 17	14°C	12°C	14°C	13.5°C
Sep 18	14°C	12°C	14°C	13.5°C
Sep 19	14°C	12°C	15°C	13.8°C
Sep 20	13°C	12°C	15°C	13.5°C
Sep 21	13°C	11°C	14°C	13.3°C
Sep 22	13°C	11°C	14°C	13.3°C
Sep 23	13°C	11°C	14°C	13.0°C
Sep 24	13°C	10°C	14°C	12.8°C
Sep 25	14°C	10°C	14°C	13.0°C
Sep 26	13°C	10°C	14°C	12.5°C
Sep 27	13°C	9°C	14°C	12.3°C
Sep 28	13°C	9°C	14°C	12.5°C
Sep 29	13°C	9°C	14°C	12.5°C

Norrtalje Climate and Swimming Opportunities in September

16°C

Average Day Air Temperature

9°C

Average Night Air Temperature

51 mm

Precipitation Amount per Month

10 days

Number of Rainy Days

13 hrs

Daylight
per Day

4 hrs

Sunshine
per Day

15 km/h

Average Wind Speed

79%

Average
humidity

Norrtalje lies within the Stockholm County in Sweden. The average daytime temperature in Norrtalje in September is 16°C (60°F), while the nighttime average is 9°C (48°F). There are typically 10 rainy days during the month, with a total precipitation of 51 mm (2.0 inches). The daylight duration in September in Norrtalje is 13 hours, with an average of 4 hours of sunshine per day. The average wind speed in September is 15 km/h (9 mph), and the humidity level is around 79%.

The water temperature in Norrtalje in September ranges from 12°C to 16°C (54°F to 61°F). At the beginning of the month, the average temperature is around 15°C (59°F), shifting to 14°C (57°F) by mid-September and reaching 13°C (55°F) in the last ten days. Overall, the average sea temperature in Norrtalje for September is 14°C (57°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in September in Nearby Cities

Frequently Asked Questions About Water Temperatures in September in Norrtalje

What is the sea temperature in Norrtalje in September?

The water temperature in the Baltic Sea in Norrtalje in September ranges from 12°C to 16°C (54°F to 61°F).

Is it possible to swim in the Baltic Sea in Norrtalje in September?

The average sea temperature in Norrtalje in September is 14°C (57°F), and the air temperature is 16°C (60°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.