Rijeka climate
Rijeka (Croatia) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 13 °C56 °F, and about 1,197 mm47 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rijeka climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 644 | 032 | 338 | 813.2 |
| Feb | 846 | 133 | 440 | 963.8 |
| Mar | 1355 | 439 | 847 | 833.3 |
| Apr | 1864 | 846 | 1355 | 853.3 |
| May | 2272 | 1254 | 1763 | 1054.1 |
| Jun | 2680 | 1662 | 2171 | 883.4 |
| Jul | 2983 | 1865 | 2374 | 712.8 |
| Aug | 2883 | 1864 | 2373 | 893.5 |
| Sep | 2374 | 1356 | 1865 | 1315.2 |
| Oct | 1865 | 1049 | 1457 | 1214.8 |
| Nov | 1355 | 643 | 949 | 1385.5 |
| Dec | 846 | 135 | 540 | 1084.3 |
| Year | 2983 | 032 | 1356 | 1,19747 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 92% | 76% | 1.3 | 9:06 |
| Feb | 89% | 75% | 2.0 | 10:19 |
| Mar | 84% | 68% | 3.2 | 11:47 |
| Apr | 79% | 66% | 4.4 | 13:27 |
| May | 77% | 66% | 5.4 | 14:52 |
| Jun | 77% | 59% | 6.2 | 15:38 |
| Jul | 74% | 50% | 6.3 | 15:19 |
| Aug | 74% | 49% | 5.4 | 14:05 |
| Sep | 79% | 61% | 3.8 | 12:27 |
| Oct | 86% | 67% | 2.4 | 10:51 |
| Nov | 90% | 76% | 1.4 | 9:26 |
| Dec | 92% | 76% | 1.1 | 8:45 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Rijeka is like
The warmest month is July, with an average high of 29 °C83 °F and a low of 18 °C65 °F. The coldest is January, when highs average 6 °C44 °F and lows 0 °C32 °F. Seasons are strongly marked: the warmest month is on average 20.1 °C36.1 °F warmer than the coldest.
It is wet, with about 1,197 mm47 in of precipitation per year. Rain is spread fairly evenly through the year. The wettest month is November (138 mm5.5 in), the driest is July (71 mm2.8 in).
Relative humidity ranges from 74% in July to 92% in January. The clearest skies (lowest average cloud amount, 49%) are typical of August. Average wind speed near the ground ranges from 1 km/h (0 mph) in May to 2 km/h (1 mph) in February. Daylight lasts from about 8.7 hours in December to 15.6 hours in June.
Best time to visit Rijeka
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–August: average highs of 22 °C72 °F to 29 °C83 °F with 71 mm2.8 in to 105 mm4.1 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 6 °C44 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Rijeka
- Winter (December–February) — highs 644 to 8 °C46 °F, lows 032 to 1 °C35 °F, about 95 mm3.7 in of precipitation a month. Pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
- Spring (March–May) — highs 1355 to 22 °C72 °F, lows 439 to 12 °C54 °F, about 91 mm3.6 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Summer (June–August) — highs 2680 to 29 °C83 °F, lows 1662 to 18 °C65 °F, about 83 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 1355 to 23 °C74 °F, lows 643 to 13 °C56 °F, about 130 mm5.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Rijeka compares
Compared with Trieste, about 63 km to the northwest, Rijeka is on average 1.4 °C2.5 °F cooler and receives 17% more precipitation (1,197 mm47 in vs 1,026 mm40 in). The difference is largest in December (2 °C3.6 °F cooler).
Of the 3 places in Croatia covered by World Climates, Rijeka is the 2nd warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Croatia climate page.
Places in other countries with the most similar temperature and rainfall pattern: Udine (Italy, Cfa), Lugano (Switzerland, Cfa) and Novara (Italy, Cfa).
Nearby places
- Trieste 63 km · 15 °C59 °F · 1,026 mm40 in
- Ljubljana 81 km · 11 °C52 °F · 1,051 mm41 in
- Udine 125 km · 14 °C56 °F · 1,074 mm42 in
- Zagreb 131 km · 11 °C53 °F · 906 mm36 in
- Klagenfurt am Wörthersee 145 km · 10 °C51 °F · 1,060 mm42 in
- Mestre 172 km · 15 °C59 °F · 943 mm37 in
- Padua 200 km · 15 °C58 °F · 879 mm35 in
- Rimini 205 km · 16 °C61 °F · 770 mm30 in
Frequently asked questions
What is the warmest month in Rijeka?
July is the warmest month in Rijeka, with an average high of 29 °C (83 °F) and an average low of 18 °C (65 °F).
What is the coldest month in Rijeka?
January is the coldest month, with an average high of 6 °C (44 °F) and an average low of 0 °C (32 °F).
When does it rain the most in Rijeka?
November is the wettest month with about 138 mm (5.5 in) of precipitation; July is the driest with about 71 mm (2.8 in).
What is the best time to visit Rijeka?
Judging by long-term averages, the most comfortable months are May–August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 666 m, while Rijeka lies at about 12 m. Temperatures on this page were therefore adjusted by +4.3 °C7.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.