18.09
fri
fri
Day
59°F
N 14 mph
Precip.
19%
19%
Night
55°F
NE 13 mph
Precip.
21%
21%
19.09
sat
sat
Day
61°F
NE 14 mph
Precip.
15%
15%
Night
57°F
NE 15 mph
Precip.
11%
11%
20.09
sun
sun
Day
59°F
NE 12 mph
Precip.
89%
89%
Night
54°F
NE 13 mph
Precip.
24%
24%
21.09
mon
mon
Day
57°F
E 16 mph
Precip.
48%
48%
Night
54°F
SE 12 mph
Precip.
51%
51%
22.09
tue
tue
Day
57°F
S 11 mph
Precip.
8%
8%
Night
52°F
SW 7 mph
Precip.
9%
9%
23.09
wed
wed
Day
55°F
S 11 mph
Precip.
13%
13%
Night
50°F
SW 8 mph
Precip.
12%
12%
24.09
thu
thu
Day
54°F
S 14 mph
Precip.
19%
19%
Night
54°F
S 21 mph
Precip.
5%
5%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 62.7°F. The highest and lowest sea temperatures during the month were 64.0°F and 61.5°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 52.7°F. The highest and lowest sea temperatures during the month were 58.1°F and 49.6°F.
Air temperature in Riga, °F
Precipitation total in Riga, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Riga
Riga on a weather map
Places in Latvia:
Name
°F
24 Hours Forecast
Riga
Local time: 07:43
September 18, friday
0900
54°F
N
12 mph
12 mph
1200
59°F
N
14 mph
14 mph
1500
61°F
N
13 mph
13 mph
1800
61°F
N
14 mph
14 mph
2100
59°F
NE
13 mph
13 mph
September 19, saturday
0000
55°F
NE
13 mph
13 mph
0300
54°F
NE
14 mph
14 mph
0600
54°F
NE
14 mph
14 mph
