Monthly climate guide
Rijeka weather in August
August in Rijeka is typically warm, with average daytime highs around 25°C (77°F) and night-time lows near 14°C (57°F). The month usually brings about 80 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are about the same as July and 5°C warmer than September.
What stands out in August
- Just 30 km apart, but Rijeka runs about 3°C cooler than Krk this month.
- Skies are at their clearest this time of year.
- Seasonally, August counts as late summer in Rijeka.
- It cools down fast from here: September is about 5°C cooler.
August is typically Rijeka's warmest month.
Avg high
25°C
77°F
Avg low
14°C
57°F
Rainfall
80 mm
some rain
Humidity
73%
relative
Sky
43%
cloud · a mix of sun and cloud
Rijeka weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 3°C / 38°F | -3°C / 27°F | 80 mm | 91% | 74% |
| February | 4°C / 39°F | -3°C / 26°F | 112 mm | 90% | 75% |
| March | 9°C / 49°F | 0°C / 32°F | 81 mm | 84% | 63% |
| April | 15°C / 58°F | 4°C / 39°F | 76 mm | 78% | 64% |
| May | 18°C / 64°F | 8°C / 46°F | 122 mm | 78% | 66% |
| June | 22°C / 72°F | 12°C / 54°F | 92 mm | 76% | 56% |
| July | 24°C / 76°F | 14°C / 58°F | 77 mm | 74% | 49% |
| August | 25°C / 77°F | 14°C / 57°F | 80 mm | 73% | 43% |
| September | 20°C / 68°F | 10°C / 50°F | 138 mm | 79% | 58% |
| October | 15°C / 59°F | 6°C / 43°F | 140 mm | 85% | 65% |
| November | 9°C / 49°F | 3°C / 37°F | 155 mm | 91% | 75% |
| December | 5°C / 41°F | -2°C / 29°F | 101 mm | 92% | 70% |
What to pack for August
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is August a good time to visit Rijeka?
Compare the months in the chart above to find your ideal window.
Best time to visit Rijeka →Other Croatia cities in August
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Rijeka weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/croatia/rijeka/august
<a href="https://weathercompare.eu/weather/croatia/rijeka/august">Rijeka weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/croatia/rijeka" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Rijeka weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/croatia/rijeka/august">Rijeka weather in August</a> – WeatherCompare</p>
Rijeka in August: quick answers
Is August a good time to visit Rijeka?
Yes. August is one of the best months for Rijeka, with highs around 25°C and about 80 mm of rain.
How warm is Rijeka in August?
Average highs are about 25°C (77°F) and average lows about 14°C (57°F), based on 10 years of daily data.
Does it rain a lot in Rijeka in August?
Rijeka typically gets around 80 mm of rain in August — some rain.
Figures are long-term averages for the area around Rijeka (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.