Portimão weather in December
December in Portimão: nice, a little rain, with clean air — a good time to visit.
#12 of 12 months in Portimão · #547 of 897 destinations to visit in December · comfort 67/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Portimão in December
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Portimão climate normals — December
| Daytime high | 17°C / 63°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 52°F | |
| Rainfall | 60 mm / 2.4 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 7.4 h/day | |
| Daylight | 9.7 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Portimão in December — FAQ
- Is December a good time to visit Portimão?
- December in Portimão: nice, a little rain, with clean air — a good time to visit. It ranks #12 of 12 months for Portimão on SeasonMap's comfort score (67/100).
- What is the weather like in Portimão in December?
- In December, Portimão averages a daily high of 17.4°C and a low of 11°C, with about 59.8 mm of rain over roughly 7.6 rainy days.
- What is the air quality in Portimão in December?
- Portimão has a mean US Air Quality Index of about 33 in December.