Measurements:
°C
°F
CURRENT WEATHER
10:11
Rijeka
46°F
N 2 mph
Feels like: 46°F
Precip: 100%
World Resorts Croatia Rijeka Weather

7 Day Weather Forecast

12.18
thu
DAY
48°F
N 2 mph
precip
78%
NIGHT
44°F
NE 1 mph
precip
81%
12.19
fri
DAY
46°F
NE 2 mph
precip
70%
NIGHT
46°F
S 1 mph
precip
82%
12.20
sat
DAY
54°F
SW 4 mph
precip
0%
NIGHT
44°F
SW 6 mph
precip
0%
12.21
sun
DAY
48°F
SW 4 mph
precip
0%
NIGHT
42°F
SW 4 mph
precip
0%
12.22
mon
DAY
50°F
W 2 mph
precip
65%
NIGHT
46°F
NW 6 mph
precip
100%
12.23
tue
DAY
50°F
W 1 mph
precip
100%
NIGHT
46°F
SW 3 mph
precip
100%
12.24
wed
DAY
48°F
NW 2 mph
precip
100%
NIGHT
46°F
SW 2 mph
precip
86%

Rijeka Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for Rijeka was 13.6°F. The maximum and minimum values were 13.2°F and 14.4°F respectively.

Rijeka on the Weather Map

Best Time to Visit Rijeka
The most sunny months:
August 23 days
July 21 days
June 20 days
The most warm months:
August 83.1 °F
July 83.0 °F
June 78.5 °F
Warmest sea temperature:
August 79.0 °F
July 78.6 °F
September 73.7 °F
The most cold months:
January 41.5 °F
February 43.2 °F
December 44.2 °F
The most rainy months:
May 7 days
November 6 days
July 6 days
The most windy months:
February 8 mph
March 7 mph
November 7 mph
more details