Arcos Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Arcos.
Climate overview of Arcos
The climate in Arcos, Portugal, sees a moderate range of temperatures across the year, from 24°C (75°F) in August down to 17°C (63°F) in March.
With around 895 mm (35 in) of annual rainfall, the city has moderate precipitation levels. December is the wettest month and July the driest. It also has a distinct dry season from July to August.
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
The weather in Arcos changes moderately throughout the year, offering enough variation to appreciate each season. Typically, average maximum daytime temperatures range from a comfortable 24°C (75°F) in August to a moderate 17°C (63°F) in the coolest month, March.
Nights vary from 21°C (70°F) in August to around 14°C (57°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Arcos
On average, Arcos receives a reasonable amount of rainfall, with an annual precipitation of 895 mm (35 in). The climate in Arcos shows significant variation throughout the year. Expect high rainfall in December, the wettest month, with an average of 125 mm (4.9 in) of precipitation over 19 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 30 mm (1.2 in) of rainfall over 12 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
Humidity in Arcos by Month
The city experiences its highest humidity in May, reaching 89%. In January, the humidity drops to its lowest level at 87%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Arcos
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August, September and November
- Warmest weather: July, August and September
- Fewer rainy days: April, May, June, July and August
- Seasonal pattern: A distinct dry season from July to August
Frequently asked questions about the climate in Arcos
What is the best time to visit Arcos?
June, July, August, September and November typically offer the most optimal weather in Arcos. In contrast, January, February, March, April and December tend to have less optimal conditions. Arcos has a distinct dry season from July to August.
What temperatures can I expect in Arcos?
Daytime highs range from 17°C (63°F) in March to 24°C (75°F) in August. Nighttime lows range from 14°C (57°F) to 21°C (70°F).
How much rain does Arcos get?
Annual rainfall is around 895 mm (35 in). December is the wettest month with 125 mm (4.9 in), while July is the driest with 30 mm (1.2 in).
Arcos 3-Day Forecast
Arcos 3-Day Forecast
Arcos on the map
Arcos is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
7 of the most budget-friendly destinations in Europe
Discover Europe's top budget-friendly destinations including Budapest, Kotor, Krakow, and more, perfect for affordable and exciting travel.
Alentejo, where time stands still
The quiet region is known for its rolling green hills and it is a true hiking paradise. Architectural highlights can be found in the castles, ancient monasteries or when exploring the countless charming villages.
An eco-friendly guide to Lagos travel
Lagos, Portugal is a great place to visit while being careful about your environmental footprint. Here you find some tips about environmentally places to stay, where to eat and how to get around in the area.
What to do in Lisbon: our tips for an unforgettable city trip
Lisbon is a bustling city with many special places. In this article you find the best sights, good restaurants and nice places to stay in Lisbon.