Rosário-Lagoa Weather in December

December in Rosário-Lagoa typically sees daytime highs of 18°C (64°F) and nighttime lows of 15°C (59°F). As the wettest month of the year, expect more rainfall than other months.

Rainfall in Rosário-Lagoa in December

With frequent rain showers this month, having an umbrella on hand will keep you dry. Rain is expected on roughly 20 days, totalling around 147 mm (5.8 in) for the month. 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 Rosário-Lagoa in December

Temperatures in Rosário-Lagoa in December top out at 18°C (64°F) and drop to 15°C (59°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 15°C (59°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Rosário-Lagoa in December

The city usually sees around 94 hours of sunlight, indicating fewer sunny days.

Average water temperature in December

At 19°C (66°F), the water is getting there — comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.

If you prefer enjoying temperate temperatures and rain-free days, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Rosário-Lagoa Temperature in December

Min Temperature 15°C (59°F)  

Max Temperature 18°C (64°F)  

Water Temperature 19°C (66°F) *  

Chance of Rain 68%  

Precipitation 147 mm (5.8 in)  

Rainy days 20 days  

Humidity 83% *  

Sunshine 94 hours *  

Percentage Sunshine *  

* Data from: Ponta Delgada, Portugal (6 KM, 4 Miles).

What to Wear in Rosário-Lagoa in December

Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 19°C (66°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Rosário-Lagoa in December

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

Swimming

4/10

Cycling

9/10

Walking

9/10

Camping

6/10

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 Rosário-Lagoa's climate page.

More climate data for Rosário-Lagoa

Temperature Rainfall Sunshine Humidity Water Temp

See the full Rosário-Lagoa climate overview or explore weather in Portugal.