Sundsvall Weather: September
 |
Average Day Temperature: | 57.6°F |
|
Average Night Temperature: | 47.3°F |
|
Sea Water Temperature: | 56.7°F |
|
Number of Sunny Days: | 9 days |
| Sunshine Hours: | 11.5 - 14.4 hours | |
|
Number of Rainy Days: | 4 days |
| Precipitation Totals: | 1.7 in | |
| detailed information | ||
forecast
| Sundsvall |
Temperature
| Sundsvall |
Air Temperature in September, °F
The highest day temperature in September 2025 was 70°F. The lowest night temperature was 41°F. The average values for day and night temperatures during September were 59.9°F и 50.8°F respectivly.
Sundsvall Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Sundsvall was 58.3°F. The maximum and minimum values were 53.4°F and 61.8°F respectively.
You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Sundsvall is 1.7 in.
The average wind speed in September is 6.7 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sundsvall in September is 6.4 hours.
Sundsvall on the Weather Map
| Gothenburg |  |
+40 |
| Helsinborg | |
+40 |
| Jonkoping | |
+38 |
| Karlstad | |
+40 |
| Kristianstad | |
+40 |
| Lund | |
+40 |
| Malmo | |
+40 |
| Orebro | |
+36 |
| Ostersund | |
+30 |
| Stockholm | |
+40 |
| Sundsvall |  |
+32 |
| Uppsala | |
+38 |
| Vasteras | |
+38 |
| 0900 |  |
32°F | SE 2 mph |
| 1200 |  |
32°F | S 1 mph |
| 1500 | |
32°F | S 1 mph |
| 1800 | |
32°F | SW 2 mph |
| 2100 | |
32°F | S 2 mph |
| 0000 | |
32°F | SW 2 mph |
| 0300 | |
34°F | SW 4 mph |
| 0600 | |
34°F | SW 6 mph |