Rijeka in Fall
In fall (September, October and November), Rijeka sees average daytime highs around 16°C and overnight lows near 10°C, with 608 mm of precipitation over about 40 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 23°C in early September to 8°C by late November. The sky is clear or mostly clear about 32% of the time across fall, and the air most often feels dry.
Fall is Rijeka's 2nd-best season to visit on our travel score. For the whole year in context, see Rijeka's year-round climate.
- Avg daytime high
- 16°C
- 2nd-warmest season
- Avg overnight low
- 10°C
- Precipitation
- 608 mm
- 40 wet days
- Avg wind
- 10 km/h
- Travel score
- 4.3
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Rijeka in Fall
Over the season highs ease from about 23°C in early September to 8°C by late November.
A typical fall day in Rijeka reaches about 16°C and drops to 10°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Rijeka
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Rijeka weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / 1° | 123 | 11.5 | 4.2 | 8.9 | 0.2 |
| Feb | 7° / 1° | 128 | 10.7 | 4.7 | 10.1 | 0.7 |
| Mar | 10° / 4° | 123 | 11.6 | 3.2 | 11.6 | 2.3 |
| Apr | 14° / 8° | 114 | 13 | 0.9 | 13.2 | 3.8 |
| May | 19° / 12° | 120 | 13.7 | 0.1 | 14.6 | 5.5 |
| Jun | 23° / 16° | 94 | 12 | 0 | 15.4 | 6.7 |
| Jul | 25° / 18° | 77 | 10 | 0 | 15.1 | 7.2 |
| Aug | 25° / 18° | 90 | 8.8 | 0 | 13.9 | 7.3 |
| Sep | 20° / 14° | 177 | 11.8 | 0 | 12.3 | 6.2 |
| Oct | 16° / 10° | 208 | 13.4 | 0.5 | 10.7 | 4.5 |
| Nov | 11° / 6° | 223 | 14.4 | 2 | 9.3 | 2.2 |
| Dec | 7° / 2° | 169 | 12.2 | 4 | 8.6 | 0.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 32% of the time across fall.
Chance of precipitation in Fall
Rijeka gets around 608 mm of rain and snow over 40 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 06 min in early September to 8 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.6 kWh/m².
Is fall a good time to visit Rijeka?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Rijeka for sightseeing.
What to pack for Rijeka in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Rijeka sees daytime highs around 16°C and nights near 10°C. Pack a warm layer and rain gear. About 40 days see rain.
Sea temperature near Rijeka in Fall
The nearest coast averages about 18°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 23°C and coldest in February near 10°C.
It's comfortable for a long swim from Jun 10 to Sep 22 — about 3.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 10 | 10 | 10 | 12 | 17 | 21 | 23 | 23 | 21 | 18 | 15 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 10 | Bracing |
| Apr | 12 | Bracing |
| May | 17 | Cool |
| Jun | 21 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 18 | Cool |
| Nov | 15 | Cool |
| Dec | 12 | Bracing |
UV index in Rijeka in Fall
Clear-sky midday UV across fall averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rijeka peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 5 | 7 | 7 | 8 | 9 | 8 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 7 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Rijeka?
Rijeka sits at 45.3°N, 14.4°E, 12 m above sea level, in Croatia. The nearest listed city is Cres, 41 km away.
Topography around Rijeka
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rijeka.
Within 3 km, the terrain around Rijeka has significant variations in elevation — a maximum elevation change of 379 m around an average of 77 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,375 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,767 m.
The land around Rijeka is covered by water (44%), trees (29%) and artificial surfaces (25%) within 3 km, trees (51%) and water (38%) within 16 km, and trees (62%) and water (24%) within 80 km.
Croatia travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 53% of US
- price level, 2025
- GDP per capita
- $27,104
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 87%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 7.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 617
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rijeka (45.3267°, 14.4424°, elevation 12 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.