Portugal
Lisbon in January: weather, sea & travel advice
This month's data profile
Balanced monthly profile
Lisbon in January is climatically mixed. The average daily high is around 15 °C, and the sea is about 15 °C. With about 10 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
44/100 · #12
Warmth
#12
Dryness
#10
Sun
#11
Sea warmth
#10
Published best categories: none
Lisbon · JanuaryPhoto: Dale Cruse - 10M views from San Francisco, CA, USA · CC BY 4.0Climate facts
- Average high
- 15 °C
- Average low
- 11 °C
- Sea
- 15 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 3 h/day
- Humidity
- 81 %
For your trip planning
January: a city visit rather than a swimming promise
January's city score is well above its beach score. November is warmer but also has more rainy days and rainfall in our series. January therefore trades warmth for slightly lower rain frequency. Still pair outdoor plans with an indoor alternative rather than treating the low overall score as a verdict on Lisbon.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| December | 16 | 12 | 11 | 84 | 2.5 | 82 | 5.0 | 16 | 45 |
| January (selected) | 15 | 11 | 10 | 69 | 2.9 | 81 | 4.8 | 15 | 44 |
| February | 15 | 11 | 9 | 52 | 4.1 | 80 | 4.8 | 15 | 49 |
How do the previous and next months compare?
Baseline: January (44/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| December | +1 | +0.9 °C | +1 °C | +0.8 | +15.1 mm | -0.4 h | +1.5 % | +0.2 m/s | +0.8 °C |
| February | +5 | +0.3 °C | -0.1 °C | -1.7 | -16.9 mm | +1.2 h | -0.1 % | ±0 m/s | -0.5 °C |
All twelve months in context
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Where to stay in Lisbon
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Useful next decisions
Frequently asked questions
How warm is Lisbon in January?
The average daily high is around 15 °C, with an average daily low of about 11 °C.
Can you swim in Lisbon in January?
The sea is about 15 °C (cold).
Does it rain a lot in Lisbon in January?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 69 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Lisbon?
By the climate score, June, July, August and September are the strongest months for Lisbon. For a beach trip: June, July, August and September. January is not among them.