Rio Maior Weather in December

During December, Rio Maior experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 8°C (46°F). As part of the winter season, expect quite a bit of rainfall. Around 83 mm (3.3 in) is typical.

Rainfall in Rio Maior in December

Historically, December sees about 14 days of rain, with a monthly average of 83 mm (3.3 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Rio Maior in December

Daytime temperatures in Rio Maior reach 16°C (61°F) in December, dropping to 8°C (46°F) at night. The month of December belongs to the winter season. The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Rio Maior in December

The area experiences a moderate amount of sunshine, with approximately 122 hours of sunlight expected. This means a decent mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, July, August, September and October typically offer the best weather for Rio Maior.

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• January
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For a detailed overview over the year and the best time to visit Portugal, check out our Rio Maior's climate page.

Rio Maior Temperature in December

Min Temperature 8°C (46°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 48%  

Precipitation 83 mm (3.3 in)  

Rainy days 14 days  

Humidity 82% *  

Sunshine 122 hours *  

Percentage Sunshine 42% *  

* Data from: Cabo Carvoeiro, Portugal (40 KM, 25 Miles).

What to Wear in Rio Maior in December

The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Rio Maior in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Portugal, check out our Rio Maior's climate page.

More climate data for Rio Maior

Temperature Rainfall Sunshine Humidity

See the full Rio Maior climate overview or explore weather in Portugal.