World Resorts Croatia Opatija Weather

Opatija 14 Days Forecast

31.08
mon
Day
79°F
NE 3 mph
Precip.
2%
Night
73°F
SW 6 mph
Precip.
5%
01.09
tue
Day
79°F
SW 6 mph
Precip.
1%
Night
73°F
SW 8 mph
Precip.
4%
02.09
wed
Day
81°F
S 5 mph
Precip.
10%
Night
72°F
SW 9 mph
Precip.
3%
03.09
thu
Day
81°F
SW 11 mph
Precip.
1%
Night
73°F
SW 7 mph
Precip.
2%
04.09
fri
Day
79°F
NE 4 mph
Precip.
5%
Night
73°F
SW 5 mph
Precip.
4%
05.09
sat
Day
77°F
N 5 mph
Precip.
2%
Night
72°F
SW 9 mph
Precip.
15%
06.09
sun
Day
75°F
SW 9 mph
Precip.
2%
Night
70°F
SW 15 mph
Precip.
6%
07.09
mon
Day
73°F
SW 7 mph
Precip.
1%
Night
68°F
SW 9 mph
Precip.
2%
08.09
tue
Day
75°F
NE 4 mph
Precip.
1%
Night
70°F
SW 6 mph
Precip.
3%
09.09
wed
Day
75°F
NE 4 mph
Precip.
10%
Night
72°F
SW 6 mph
Precip.
10%
10.09
thu
Day
75°F
NE 4 mph
Precip.
2%
Night
72°F
SW 5 mph
Precip.
9%
11.09
fri
Day
75°F
NE 4 mph
Precip.
6%
Night
70°F
S 5 mph
Precip.
53%
12.09
sat
Day
72°F
NW 7 mph
Precip.
57%
Night
64°F
SW 10 mph
Precip.
28%
13.09
sun
Day
72°F
SW 6 mph
Precip.
13%
Night
66°F
SW 12 mph
Precip.
16%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 78.5°F. The highest and lowest sea temperatures during the month were 81.1°F and 75.4°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 72.4°F. The highest and lowest sea temperatures during the month were 73.6°F and 70.9°F.

Air temperature in Opatija, °F

Precipitation total in Opatija, in.

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

Best time for vacation in Opatija

Sunniest months:
August 23 days
July 21 days
June 19 days
Warmest months:
August 80.1 °F
July 79.7 °F
June 75.7 °F
Warmest sea temp:
August 76.2 °F
July 75.8 °F
September 71.3 °F
Coldest months:
January 42.3 °F
February 44.2 °F
December 45.0 °F
Rainiest months:
May 7 days
November 6 days
July 6 days
Windiest months:
February 8.3 mph
March 7.9 mph
November 7.8 mph

Opatija on a weather map

Current weather
02:44
Opatija
+75°F
SW 6 mph
Feels like: +77°F
Precip.: 5%
Places in Croatia:
Name
°F
Baska Voda
+79°F
Brela
+79°F
Dubrovnik
+77°F
Zagreb
+73°F
Zadar
+79°F
Klek
+73°F
Makarska
+70°F
Omis
+77°F
Porec
+77°F
Pula
+73°F
Rijeka
+73°F
Rovinj
+75°F
Split
+77°F
Tucepi
+70°F
Crikvenica
+73°F
all places
24 Hours Forecast
Opatija
Local time: 02:44
August 31, monday
0300
75°F
SW
6 mph
0600
73°F
SW
5 mph
0900
77°F
W
0 mph
1200
79°F
NE
3 mph
1500
79°F
E
4 mph
1800
77°F
SE
1 mph
2100
75°F
SW
3 mph
September 01, tuesday
0000
73°F
SW
6 mph
Units of measurement: °C / °F