Lappeenranta Weather: September
 |
Average Day Temperature: | 59.6°F |
|
Average Night Temperature: | 49.7°F |
|
Sea Water Temperature: | 60.3°F |
|
Number of Sunny Days: | 7 days |
| Sunshine Hours: | 11.5 - 14.2 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 2.0 in | |
| detailed information | ||
forecast
| Lappeenranta |
Temperature
| Lappeenranta |
Air Temperature in September, °F
The highest day temperature in September 2025 was 76°F. The lowest night temperature was 37°F. The average values for day and night temperatures during September were 62.9°F и 52.3°F respectivly.
Lappeenranta Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Lappeenranta was 62.4°F. The maximum and minimum values were 56.0°F and 66.6°F respectively.
Most of the days in September are gloomy but you can also expect sunny days.
Precipitation Totals in September, in
Precipitation total in September for Lappeenranta is 2.0 in.
The average wind speed in September is 8.0 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 Lappeenranta in September is 6.1 hours.
Lappeenranta on the Weather Map
| Espoo |  |
+38 |
| Helsinki | |
+38 |
| Juvaskyla |  |
+34 |
| Kemi |  |
+30 |
| Koli National Park | |
+32 |
| Kotka | |
+38 |
| Lahti | |
+36 |
| Lappeenranta | |
+36 |
| Oulu |  |
+34 |
| Pori | |
+38 |
| Saariselka | |
+14 |
| Savolinna | |
+34 |
| Turku | |
+40 |
| Vaasa | |
+38 |
| Vantaa | |
+38 |
| 1200 |  |
36°F | NE 5 mph |
| 1500 | |
36°F | NE 4 mph |
| 1800 |  |
34°F | NE 4 mph |
| 2100 | |
34°F | N 3 mph |
| 0000 |  |
36°F | N 3 mph |
| 0300 | |
36°F | NW 4 mph |
| 0600 | |
36°F | NW 5 mph |
| 0900 | |
36°F | W 6 mph |