World Resorts Finland Lahti Weather

Lahti 7 Days Forecast

15.09
tue
Day
55°F
NE 2 mph
Precip.
13%
Night
50°F
N 4 mph
Precip.
27%
16.09
wed
Day
57°F
N 11 mph
Precip.
24%
Night
55°F
N 11 mph
Precip.
77%
17.09
thu
Day
55°F
NE 12 mph
Precip.
34%
Night
46°F
NE 7 mph
Precip.
14%
18.09
fri
Day
55°F
NE 8 mph
Precip.
22%
Night
54°F
N 7 mph
Precip.
60%
19.09
sat
Day
55°F
NE 11 mph
Precip.
24%
Night
50°F
NE 7 mph
Precip.
38%
20.09
sun
Day
59°F
NE 10 mph
Precip.
22%
Night
50°F
E 9 mph
Precip.
39%
21.09
mon
Day
48°F
SE 9 mph
Precip.
31%
Night
45°F
S 9 mph
Precip.
11%

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 60.6°F. The highest and lowest sea temperatures during the month were 63.7°F and 56.5°F.

Air temperature in Lahti, °F

Precipitation total in Lahti, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Lahti

Sunniest months:
May 11 days
June 11 days
July 11 days
Warmest months:
July 71.2 °F
August 68.2 °F
June 67.2 °F
Warmest sea temp:
August 67.7 °F
July 65.6 °F
September 61.5 °F
Coldest months:
January 22.9 °F
February 25.2 °F
December 28.8 °F
Rainiest months:
June 4 days
July 4 days
May 3 days
Windiest months:
December 7.6 mph
March 7.5 mph
October 7.3 mph

Lahti on a weather map

Current weather
04:48
Lahti
+45°F
SE 2 mph
Feels like: +45°F
Precip.: 17%
Places in Finland:
Name
°F
Vaasa
+48°F
Vantaa
+46°F
Imatra
+45°F
Kemi
+48°F
Kotka
+50°F
Lappeenranta
+45°F
Lahti
+45°F
Oulu
+43°F
Pori
+46°F
Saariselka
+43°F
Savolinna
+45°F
Turku
+48°F
Helsinki
+46°F
Espoo
+46°F
Juvaskyla
+43°F
all places
24 Hours Forecast
Lahti
Local time: 04:48
September 15, tuesday
0600
45°F
SE
2 mph
0900
48°F
SE
1 mph
1200
55°F
NE
2 mph
1500
59°F
N
5 mph
1800
57°F
N
5 mph
2100
50°F
N
5 mph
September 16, wednesday
0000
50°F
N
4 mph
0300
50°F
NW
6 mph
Units of measurement: °C / °F