Viana do Castelo Weather in March
March in Viana do Castelo sees daytime temperatures around 16°C (61°F) and lows of 10°C (50°F) at night. With around 154 mm (6.1 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Viana do Castelo in March
Historically, March sees about 16 days of rain, with a monthly average of 154 mm (6.1 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Viana do Castelo in March
If you're visiting Viana do Castelo in March, expect highs of 16°C (61°F) and overnight lows around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Viana do Castelo in March
With approximately 194 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Viana do Castelo.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Viana do Castelo's climate page.
Viana do Castelo Temperature in March
Min Temperature
10°C (50°F)
Max Temperature
16°C (61°F)
Chance of Rain
55%
Precipitation
154 mm (6.1 in)
Rainy days
16 days
Humidity
75% *
Sunshine
194 hours *
Percentage Sunshine
49% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Viana do Castelo typically stay consistent throughout March, with daily highs averaging around 16°C (61°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in March
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in March
Historical weather for Viana do Castelo in March
Browse day-by-day weather records for Viana do Castelo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Viana do Castelo historical weather extremes in March
Our historical data for Viana do Castelo spans 1976 to 2026, revealing these weather extremes.
- On March 22, 2002, temperatures climbed to 30°C (86°F), marking the warmest March day on record.
- Viana do Castelo experienced its chilliest March day on March 13, 1984, reaching only 8°C (46°F).
- Nighttime temperatures dropped to -3°C (27°F) on March 2, 2005, marking the coldest March night on record.
- The heaviest March precipitation occurred on March 21, 2001, when 69 mm (2.7 in) of precipitation fell.
Best Places in Portugal in March
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in March →
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What to Wear in Viana do Castelo in March
Comfortable temperatures call for an easy wardrobe in March. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Viana do Castelo in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Portugal, check out our Viana do Castelo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Viana do Castelo climate overview or explore weather in Portugal.
