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Arcos Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Arcos.
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Climate overview of Arcos
Arcos, Norte Region, Portugal, experiences significant temperature variation throughout the year. Summers bring daytime highs of 26°C (79°F) in August, while winters cool to 14°C (57°F) in January.
Rainfall is high, totalling around 1389 mm (55 in) per year. November is the wettest month and July the driest. The city also experiences distinct dry (July to August) and wet (October to December) seasons, with warm summers and mild winters. The most sunshine falls in July, with an average of 10.2 hours of daily sunshine.
Arcos Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Arcos - and find the best time to visit.
Monthly Temperature in Arcos
Depending on the time of the year, temperatures range from comfortable to moderate in Arcos. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in August, the warmest time of the year, to a moderate 14°C (57°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in August to around 7°C (45°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Arcos
Arcos has a relatively rainy climate with high precipitation levels, averaging 1389 mm (55 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives heavy rainfall, averaging 185 mm (7.3 in) of precipitation, recorded across 16 rainy days. In contrast, the driest month July brings less rainfall, with 25 mm (1 in) over 6 rainy days. For more details, please visit our Arcos Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Arcos
Seasonal changes in sunshine hours are quite dramatic in Arcos. While July receives considerable daily sunshine with up to 10.2 hours, January marks the darkest time of the year, where sunshine is scarce with only 4.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Porto, Portugal (18 KM, 11 Miles).
Daily hours of sunshine
Data from: Porto, Portugal (18 KM, 11 Miles).
Daily percentage of sunshine
Data from: Porto, Portugal (18 KM, 11 Miles).
Water Temperature in Arcos
The mean water temperature over the year ranges from 13°C (55°F) in February to 18°C (64°F) in August.
Water temperature over the year
Data from: Porto, Portugal (18 KM, 11 Miles).
Humidity in Arcos by Month
The relative humidity is high throughout the year in Arcos.
The city experiences its highest humidity in January, reaching 81%. In July, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Porto, Portugal (18 KM, 11 Miles).
Wind Speed in Arcos
The average wind speed over the year ranges from 4 m/s (8 knots) to 5 m/s (10 knots). It is lower in June, July, August, September and October and higher in January, February, March, April, May, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Porto, Portugal (18 KM, 11 Miles).
Best Time to Visit Arcos
For comfortable weather, consider visiting Arcos in June, July, August and September. Conditions are usually least favourable in November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
mixed
Feb
mixed
Mar
mixed
Apr
good
May
very good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
wet
Dec
wet
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July and August
- Warmest water temperature: July, August, September and October, although the water may still feel cool.
- Seasonal pattern: Distinct dry (July to August) and wet (October to December) seasons, with warm summers and mild winters
Frequently asked questions about the climate in Arcos
What is the best time to visit Arcos?
June, July, August and September typically offer the most optimal weather in Arcos. In contrast, November and December tend to have less optimal conditions. Arcos has distinct dry (July to August) and wet (October to December) seasons, with warm summers and mild winters.
What temperatures can I expect in Arcos?
Daytime highs range from 14°C (57°F) in January to 26°C (79°F) in August. Nighttime lows range from 7°C (45°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Arcos get?
Annual rainfall is around 1389 mm (55 in). November is the wettest month with 185 mm (7.3 in), while July is the driest with 25 mm (1 in).
How sunny is Arcos?
Arcos receives around 2,465 hours of sunshine per year. July is the sunniest month with 307 hours, while January is the cloudiest with just 122 hours. Overall, Arcos enjoys abundant sunshine.
Arcos 3-Day Forecast
Arcos on the map
Arcos is highlighted - select any city to see its climate.
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