Monthly climate guide
Viana do Castelo weather in June
Expect warm weather in Viana do Castelo in June: afternoons reach about 22°C (72°F), while nights drop to around 14°C (57°F). Around 34 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are 2°C warmer than May and 3°C cooler than July.
What stands out in June
- Just 40 km apart, but Viana do Castelo runs about 2°C cooler than Braga this month.
- Rain is well below Viana do Castelo's usual level (around 61% less).
- June brings early summer to Viana do Castelo.
Avg high
22°C
72°F
Avg low
14°C
57°F
Rainfall
34 mm
fairly dry
Humidity
74%
relative
Sky
41%
cloud · a mix of sun and cloud
Viana do Castelo weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 13°C / 55°F | 7°C / 45°F | 141 mm | 87% | 54% |
| February | 14°C / 56°F | 7°C / 45°F | 102 mm | 84% | 51% |
| March | 15°C / 60°F | 8°C / 47°F | 111 mm | 81% | 49% |
| April | 17°C / 63°F | 10°C / 50°F | 104 mm | 81% | 52% |
| May | 20°C / 68°F | 12°C / 54°F | 70 mm | 78% | 43% |
| June | 22°C / 72°F | 14°C / 57°F | 34 mm | 74% | 41% |
| July | 26°C / 78°F | 16°C / 60°F | 13 mm | 69% | 28% |
| August | 26°C / 78°F | 16°C / 61°F | 25 mm | 69% | 30% |
| September | 25°C / 77°F | 16°C / 60°F | 52 mm | 69% | 34% |
| October | 21°C / 70°F | 14°C / 56°F | 120 mm | 76% | 46% |
| November | 16°C / 61°F | 10°C / 50°F | 152 mm | 84% | 53% |
| December | 14°C / 57°F | 8°C / 47°F | 132 mm | 86% | 54% |
What to pack for June
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
Is June a good time to visit Viana do Castelo?
Compare the months in the chart above to find your ideal window.
Best time to visit Viana do Castelo →Other Portugal cities in June
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Viana do Castelo weather in June. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/portugal/viana-do-castelo/june
<a href="https://weathercompare.eu/weather/portugal/viana-do-castelo/june">Viana do Castelo weather in June</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/portugal/viana-do-castelo" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Viana do Castelo weather in June"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/portugal/viana-do-castelo/june">Viana do Castelo weather in June</a> – WeatherCompare</p>
Viana do Castelo in June: quick answers
Is June a good time to visit Viana do Castelo?
Yes. June is one of the best months for Viana do Castelo, with highs around 22°C and about 34 mm of rain.
How warm is Viana do Castelo in June?
Average highs are about 22°C (72°F) and average lows about 14°C (57°F), based on 10 years of daily data.
Does it rain a lot in Viana do Castelo in June?
Viana do Castelo typically gets around 34 mm of rain in June — fairly dry.
Figures are long-term averages for the area around Viana do Castelo (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.