AI-generatedRijeka at a glance
- Best time
- Jun – Aug
- Warmest month
- Aug · 28°
- Warmest sea
- Aug · 23.6°
- Sunshine a year
- 2,380 h
- Rain a year
- 1,956 mm
- Climate
- Temperate
- Time zone
- UTC+1 / UTC+2
- Elevation
- 12 m
Climate in Rijeka
Rijeka has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 28 °C, while January is the coolest at 8 °C. With around 2,380 hours of sunshine a year, Rijeka is sunny; July is the sunniest month with 10.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: June – August
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 13°
- Midday, 13:00: about 17°
- Afternoon, 16:00: about 18°
- Evening, 20:00: about 15°
- Night, 23:00: about 14°
07:1718:19
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:58–07:57 · evening 17:39–18:37
- Blue hour
- Morning 06:47–06:58 · evening 18:37–18:49
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Rijeka in October?
In October, Rijeka is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 246 mm in total. All in all, October is not an ideal month for a holiday in Rijeka.
More details for October
- Daylight
- 11 h 2 min07:17 – 18:19
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 59 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Zagreb
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %17 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 20 %31 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sea temperature in Rijeka
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 16.8 – 19.3 °C
Swimming season: Jun – Sep
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Rijeka ranges from 10.0 °C in February to 23.6 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to September.
From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 21.8 and 25.6 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 10.8° | 9.6° | 12.2° | cold |
| FebruaryFeb | 10.0° | 8.9° | 11.5° | cold |
| MarchMar | 10.1° | 9.1° | 11.4° | cold |
| AprilApr | 12.4° | 11.6° | 13.4° | cold |
| MayMay | 16.8° | 15.7° | 18.1° | cold |
| JuneJun | 21.1° | 19.8° | 22.5° | refreshing |
| JulyJul | 23.5° | 22.3° | 24.7° | pleasant |
| AugustAug | 23.6° | 21.8° | 25.6° | pleasant |
| SeptemberSep | 20.8° | 19.4° | 22.8° | refreshing |
| OctoberOct | 18.2° | 16.8° | 19.3° | fresh |
| NovemberNov | 15.6° | 13.8° | 17.0° | cold |
| DecemberDec | 12.7° | 11.7° | 14.1° | cold |
Sunshine hours in Rijeka
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.3 of 11.0 hours of daylight in Rijeka, 48 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Rijeka
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 45 min
- Fair skin
- about 55 min
- Light brown skin
- about 80 min
- Olive skin
- about 100 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Rijeka: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Rijeka has about 14 rainy days with 246 mm of rain in total.
Wind and clouds in Rijeka
How breezy and how cloudy Rijeka is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Rijeka typically peaks at 16 km/h during the day: Beaufort 3, light breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 59 % of the sky over Rijeka: variable cloud, with about 5.3 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Rijeka
How often the day gets hot in Rijeka (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Rijeka has about 0 hot days, with an average daytime high of 18 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Rijeka
Snow is possible in Rijeka, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Rijeka.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Rijeka
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
CoolOctober: nights around 12°. A duvet at night and a jumper for the evening.
The coolest nights are in January (3°), the warmest in July (20°). Tropical nights of 20 °C and more are the rule from July to August; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in June and in September. Nights fall below 8 °C on average from December to March, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 12 | 8° | 3° | 10.8° | 4.0 h | 12 | 151 |
| FebruaryFeb | 18 | 9° | 3° | 10.0° | 5.2 h | 11 | 145 |
| MarchMar | 20 | 12° | 5° | 10.1° | 6.2 h | 12 | 146 |
| AprilApr | 20 | 16° | 9° | 12.4° | 6.7 h | 12 | 133 |
| MayMay | 33 | 21° | 13° | 16.8° | 8.1 h | 13 | 140 |
| JuneJun | 81 | 25° | 18° | 21.1° | 9.0 h | 10 | 100 |
| JulyJul | 89 | 28° | 20° | 23.5° | 10.0 h | 11 | 101 |
| AugustAug | 90 | 28° | 20° | 23.6° | 9.5 h | 10 | 115 |
| SeptemberSep | 57 | 23° | 16° | 20.8° | 7.0 h | 12 | 224 |
| OctoberOct | 18 | 18° | 12° | 18.2° | 5.3 h | 14 | 246 |
| NovemberNov | 7 | 13° | 8° | 15.6° | 3.6 h | 15 | 271 |
| DecemberDec | 10 | 9° | 4° | 12.7° | 3.5 h | 12 | 184 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
45.33° N, 14.44° E · 12 m · Europe/Zagreb
Best time to visit Rijeka
The best time to visit Rijeka is from June to August. For a beach holiday with the sea above 21 °C, go from June to August. For sightseeing, day trips and hiking, conditions are most comfortable from June to September. Rain is most frequent from April to May and from October to December; the wettest month is November with 271 mm.
Rijeka through the seasons
How the weather changes over the seasons, with averages for each.
Rijeka in spring
Mar – May
Poor
- 12–21 °C by day
- Sea 13 °C
- 7 h of sun a day
- 37 rainy days in all
Rijeka in summer
Jun – Aug
Excellent
- 25–28 °C by day
- Sea 23 °C
- 10 h of sun a day
- 31 rainy days in all
Rijeka in autumn
Sep – Nov
Poor
- 13–23 °C by day
- Sea 18 °C
- 5 h of sun a day
- 40 rainy days in all
Rijeka in winter
Dec – Feb
Poor
- 8–9 °C by day
- Sea 11 °C
- 4 h of sun a day
- 35 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Rijeka for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Compare two months in Rijeka
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Rijeka: score 90 against 18. In August, days are 10 °C warmer than in October. The sea is 5 °C warmer in August. August has 4 fewer rainy days. The sun shines 4 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Weather score | 18 | 90better |
| Day high | 18° | 28° |
| Night low | 12° | 20° |
| Sea | 18.2° | 23.6° |
| Sunshine | 5.3 h | 9.5 hbetter |
| Rainy days | 14 | 10better |
| Rainfall | 246 mm | 115 mmbetter |
| Muggy days | 0better | 6 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
Jun – Aug
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Sep
15–28 °C and not too much rain
Rainy months
Apr – May, Oct – Dec
12 or more rainy days
Snow
Feb
Snow on 2 or more days
Rijeka month by month
The typical weather for every month at a glance.
12January8° · Sea 11° · 4 h
In January, Rijeka is cold: daytime highs average 8 °C, and nights cool down to about 3 °C. The sea averages 10.8 °C – swimming is only for the hardy. Expect around 4 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 151 mm in total. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Rijeka.
Rijeka in January18February9° · Sea 10° · 5 h
In February, Rijeka is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sea averages 10.0 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 145 mm in total. Snow falls on about 2 days. All in all, February is not an ideal month for a holiday in Rijeka.
Rijeka in February20March12° · Sea 10° · 6 h
In March, Rijeka is cool: daytime highs average 12 °C, and nights cool down to about 5 °C. The sea averages 10.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 146 mm in total. All in all, March is not an ideal month for a holiday in Rijeka.
Rijeka in March20April16° · Sea 12° · 7 h
In April, Rijeka is mild: daytime highs average 16 °C, and nights cool down to about 9 °C. The sea averages 12.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 133 mm in total. All in all, April is not an ideal month for a holiday in Rijeka.
Rijeka in April33May21° · Sea 17° · 8 h
In May, Rijeka is mild: daytime highs average 21 °C, and nights cool down to about 13 °C. The sea averages 16.8 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 13 rainy days and 140 mm in total. All in all, May is not an ideal month for a holiday in Rijeka.
Rijeka in May81June25° · Sea 21° · 9 h
In June, Rijeka is warm: daytime highs average 25 °C, and nights cool down to about 18 °C. The sea averages 21.1 °C – refreshing for a swim. With around 9 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 10 rainy days and 100 mm in total. All in all, June is an excellent month for a holiday in Rijeka.
Rijeka in June89July28° · Sea 24° · 10 h
In July, Rijeka is hot: daytime highs average 28 °C, and nights cool down to about 20 °C. The sea averages 23.5 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 11 rainy days and 101 mm in total. On about 8 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Rijeka.
Rijeka in July90August28° · Sea 24° · 10 h
In August, Rijeka is hot: daytime highs average 28 °C, and nights cool down to about 20 °C. The sea averages 23.6 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 10 rainy days and 115 mm in total. On about 9 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Rijeka.
Rijeka in August57September23° · Sea 21° · 7 h
In September, Rijeka is warm: daytime highs average 23 °C, and nights cool down to about 16 °C. The sea averages 20.8 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 224 mm in total. All in all, September is a so-so month for a holiday in Rijeka.
Rijeka in September18October18° · Sea 18° · 5 h
In October, Rijeka is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. The sea averages 18.2 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 246 mm in total. All in all, October is not an ideal month for a holiday in Rijeka.
Rijeka in October7November13° · Sea 16° · 4 h
In November, Rijeka is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 15.6 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. It rains often – on about 15 days, adding up to 271 mm. All in all, November is not an ideal month for a holiday in Rijeka.
Rijeka in November10December9° · Sea 13° · 4 h
In December, Rijeka is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sea averages 12.7 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 12 rainy days and 184 mm in total. All in all, December is not an ideal month for a holiday in Rijeka.
Rijeka in DecemberRijeka compared
Put Rijeka side by side with another destination.
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Rijeka vs. Opatija
In October the holiday weather in Rijeka and Opatija is about equally good (score 18 vs. 21). During the day it is about as warm in Opatija as in Rijeka. The sea is about equally warm. Opatija gets one more hour of sunshine a day.
| in October | Rijeka | Opatija |
|---|---|---|
| Holiday score | 18 | 21 |
| Daytime high | 18° | 18° |
| Sea | 18° | 18° |
| Sunshine | 5 h | 6 h |
| Rainy days | 14 | 13 |
| Best time | Jun – Aug | Jun – Aug |
Through the year
Croatia in October: the best places
In October, Rijeka ranks 31 among the 31 nearest destinations in this country.
- Knin19°78
- 2Motovun17°70
- 3Karlovac17°68
- 4Zagreb17°68
- 5Varaždin16°68
- 6Trogir20°21°42
- 7Vis20°21°42
- 8Makarska20°21°39
- 31RijekaThis page18°18°18
Planning a trip to Rijeka
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Rijeka in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Rijeka has its best school-holiday weather during the summer holidays (score 90) and its weakest during the Christmas holidays (score 11).
- 20
Easter holidays
Mar – Apr
Poor
- 15 °C by day
- Sea 12 °C
- 6.5 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 43
May half-term
May – Jun
Fair
- 21 °C by day
- Sea 18 °C
- 8.3 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 90
Summer holidays
Jul – Aug
ExcellentBest holidays
- 28 °C by day
- Sea 24 °C
- 9.7 h of sun a day
- 10 rainy days a month
Good for: Beach & swimming, Sightseeing & walks
- 18
October half-term
Oct
Poor
- 18 °C by day
- Sea 18 °C
- 5.3 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 11
Christmas holidays
Dec – Jan
Poor
- 8 °C by day
- Sea 12 °C
- 3.8 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 2 h 5 min
- Distance
- 1,290 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Rijeka
When is the best time to visit Rijeka?
The best time to visit Rijeka is from June to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Rijeka?
The sea temperature in Rijeka ranges from 10.0 °C in February to 23.6 °C in August. It is warm enough for a comfortable swim (20 °C and more) from June to September.
Can you swim in Rijeka in October?
Only if you don't mind cold water: in October the sea averages just 18.2 °C. Comfortable swimming is possible from June to September.
What is the warmest month in Rijeka?
August is the warmest month, with average highs of 28 °C and nights around 20 °C. January is the coolest month at 8 °C.
When does it rain most in Rijeka?
Rain is most frequent from April to May and from October to December; the wettest month is November with 271 mm. The driest month is June with 100 mm.
How many hours of sunshine does Rijeka get?
Rijeka gets around 2,380 hours of sunshine a year. The sunniest month is July with 10.0 hours a day; in December there are 3.5 hours a day.
What time zone is Rijeka in?
Rijeka uses the time zone Europe/Zagreb: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Rijeka?
A nonstop flight from London to Rijeka takes about 2 h 5 min, for a straight-line distance of about 1,290 km.
Which school holidays are best for Rijeka?
Rijeka has its best school-holiday weather during the summer holidays (score 90) and its weakest during the Christmas holidays (score 11). Holiday ratings (0–100): Easter holidays 20, May half-term 43, Summer holidays 90, October half-term 18, Christmas holidays 11.
Near Rijeka
Other destinations close by.
Places with a climate like Rijeka
Destinations whose weather through the year is closest to Rijeka's – good alternatives.