Portugal · Regional climate

Viana do Castelowhen to go

Regional slice of Portugal with its own temperature profile. Best months here: Jul · Aug · May.

Range: 12–25 °C
Compare: −2.2°C vs. Portugal mean
Country: Portugal
TZ: Europe/Lisbon

Region match

Perfect match

Free-tier default preferences. Tune preferences on the map to reshape this score.

12-month climate · Viana do Castelo

How the year moves in Viana do Castelo

Ten years of ERA5, aggregated over Viana do Castelo itself rather than over Portugal as a whole — the same series the month-by-month scores below are built from.

Temperature°C

View data table

Month	Average daytime high (°C)
January	12.2
February	13.7
March	14.6
April	17.0
May	19.5
June	21.6
July	24.8
August	25.3
September	22.6
October	19.6
November	14.8
December	12.9

Rainfallmm

View data table

Month	Rainfall (mm)
January	222
February	159
March	191
April	167
May	118
June	81
July	23
August	24
September	83
October	235
November	232
December	227

Sunshinehr / day

View data table

Month	Sunshine hours (hr / day)
January	4.1
February	5.4
March	6.2
April	7.3
May	8.4
June	8.7
July	10.0
August	9.5
September	7.5
October	5.6
November	4.2
December	3.7

Month by month · Viana do Castelo

Pick your window

Other regions · Portugal

Nearby and comparable

Safety · 6 governments

What the governments say about Portugal

Combined advisory · most-cautious-wins

Exercise normal precautions

Highest level across 6 governments · Advisory last changed 2026-10-04

See breakdown by country