Portugal
Lisbon in October: weather, sea & travel advice
This month's data profile
Clear transition month
Lisbon in October is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 21 °C, and the sea is about 18 °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
66/100 · #6
Warmth
#5
Dryness
#9
Sun
#8
Sea warmth
#3
Published best categories: none
Lisbon · OctoberPhoto: Dale Cruse - 10M views from San Francisco, CA, USA · CC BY 4.0Climate facts
- Average high
- 21 °C
- Average low
- 17 °C
- Sea
- 18 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 81 %
For your trip planning
October: almost as warm as September, but much wetter
October in Lisbon keeps average daily highs close to September, 21 °C against 22 °C, but precipitation jumps from 28 mm to 76 mm, well over twice as much. November is cooler and wetter still. As the third wettest month in our series, October calls for an umbrella and a few indoor alternatives for wetter days.
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 |
|---|---|---|---|---|---|---|---|---|---|
| September | 22 | 18 | 5 | 28 | 6.6 | 81 | 4.0 | 19 | 81 |
| October (selected) | 21 | 17 | 10 | 76 | 4.5 | 81 | 4.2 | 18 | 66 |
| November | 18 | 14 | 12 | 87 | 3.2 | 81 | 4.8 | 17 | 52 |
How do the previous and next months compare?
Baseline: October (66/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| September | +15 | +1.8 °C | +1.3 °C | -5.2 | -48.3 mm | +2.1 h | -0.5 % | -0.2 m/s | +0.5 °C |
| November | -14 | -2.9 °C | -2.6 °C | +1.3 | +10.6 mm | -1.3 h | -0.8 % | +0.5 m/s | -1 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Lisbon in October?
The average daily high is around 21 °C, with an average daily low of about 17 °C.
Can you swim in Lisbon in October?
The sea is about 18 °C (refreshing).
Does it rain a lot in Lisbon in October?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 76 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. October is not among them.