Best time to visit Lisbon
Re-score for me — drag the dial — every chart recolours live for your heat & sea limits 27°C · sea 29°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Default 29 °C is the Beach Climate Index "bathtub" line (Morgan et al.) — where the sea stops being refreshing and starts feeling like a warm bath.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Lisbon
30 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Lisbon).
- 1
True 4Hour Private Tuk Tuk Tour: Discover Lisbon with a Local! - 2
Lisbon Highlights Private Tour with Van and Local Guide 4H - 3
Sintra Tour with Pena Palace and Regaleira All Tickets Included - 4
3-Hour Lisbon 7 Hills Electric Bike Tour - 5
Pastel de Nata Pastry Class: Bake and Enjoy Your Own Treats - 6
Sintra Private Trip from Lisbon Customizable Dreamlike Experience - 7
Sintra-Cascais-Pena Palace 8-People Small Group Tour from Lisbon - 8
Private Tour Sintra from Lisbon Palaces of Pena and Regaleira - 9
Private Tour Sintra, Pena Palace and Cascais from Lisbon - 10
Private day in Sintra skip-line Flexible Tour DiscoverWonderland - 11
Porto Private Tour from Lisbon with Douro Cruise and Wine Tasting - 12
Sintra and Cascais Private Tour with Pena Palace Ticket Included - 13
Tour of Lisbon in a Private Tour - 14
Sintra and Cascais Small-Group Day Trip from Lisbon - 15
Private Lisbon Sightseeing Tuk-Tuk Tour: Alfama, Belém & More - 16
Lisbon Highlights: Private Tuk Tuk Tour Adventure Sightseeing - 17
Old Lisbon : Private Guided Tour by Electric Quad & Tuk Tuk - 18
Welcome Tour to Lisbon in Private Eco Tuk Tuk with a Local - 19
Lisbon Private Driver and Customizable Tour - 20
Explore Lisbon by Tuk Tuk: History and Viewpoints - 21
Lisbon Private Tuk Tuk Tour and Hotel Pickup: 2, 3, or 4 Hours - 22
Private Lisbon Arrabida Wine Tour: Food & Wines, Mountain and Sea - 23
Small-Group Sintra, Pena, Regaleira & Cascais with Tickets - 24
Airport Private Transfer to/from Lisbon - 25
Private Tuk Tuk Tour Through Lisbon’s Historical Streets - 26
Small-Group Lisbon to Sintra, Pena, Regaleira, Cabo Roca, Cascais - 27
Sintra Half-Day Private Tour - A Journey Through Wonderland - 28
Sintra Full-Day Private Tour - Including Pena Palace + Regaleira - 29
Lisbon to Porto Up to 4 Stops: Obidos, Nazare, Fatima and Aveiro - 30
Day Trip from Lisbon to Algarve, Benagil, Lagos with Boat Option
Last refreshed 2026-05-25.
Similar climatesFaro93% · Cannes92% · Nice91%
Other destinations with the most-alike year-round climate to Lisbon (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Lisbon's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 9–15 | 13 | 7 | 93 | 13.3 | 74% | 18 | 180 | 2 | Quiet | 8 |
| Feb | 10–17 | 15 | 7 | 89 | 12.7 | 71% | 18 | 176 | 3 | Quiet | 8 |
| Mar | 11–18 | 16 | 9 | 107 | 11.9 | 66% | 21 | 223 | 4 | Quiet | 8 |
| Apr | 12–20 | 19 | 9 | 120 | 13.3 | 63% | 20 | 248 | 6 | Quiet | 8 |
| May | 15–23 | 22 | 4 | 62 | 15.5 | 55% | 21 | 288 | 7 | Quiet | 10 |
| Jun | 16–25 | 24 | 5 | 70 | 14.0 | 57% | 21 | 297 | 8 | Quiet | 9 |
| Jul | 18–29 | 29 | 0 | 8 | — | 49% | 21 | 312 | 9 | Quiet | 9 |
| Aug | 18–29 | 29 | 0 | 7 | — | 52% | 21 | 285 | 8 | Peak | 9 |
| Sep | 17–26 | 26 | 7 | 86 | 12.3 | 58% | 20 | 241 | 6 | Busy | 9 |
| Oct | 16–23 | 23 | 11 | 129 | 11.7 | 65% | 20 | 202 | 4 | Moderate | 8 |
| Nov | 12–19 | 18 | 9 | 100 | 11.1 | 73% | 18 | 170 | 2 | Peak | 8 |
| Dec | 10–16 | 14 | 9 | 126 | 14.0 | 77% | 19 | 168 | 2 | Moderate | 7 |
UV Index in Lisbon by Month
UV index in Lisbon peaks at 9 (very high) in July, dropping to 2 (low) in January. July, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
Best months in detail
May
10/1015–23°C (feels 22°C) · 4 rain days (62h) · 288 sun hours · 55% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
June
9/1016–25°C · 5 rain days (70h) · 297 sun hours · 57% humidity · Quiet crowd · UV 8 (high) · sunniest 1 in 10 days reach 9 (very high)
August
9/1018–29°C · 0 rain days (7h) · 285 sun hours · 52% humidity · Peak crowd · UV 8 (very high)
Every month
Show the other 9 months in detail
January
8/109–15°C (feels 13°C) · 7 rain days (93h) · 180 sun hours · 74% humidity · Quiet crowd · UV 2 (low)
February
8/1010–17°C (feels 15°C) · 7 rain days (89h) · 176 sun hours · 71% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
March
8/1011–18°C (feels 16°C) · 9 rain days (107h) · 223 sun hours · 66% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (high)
April
8/1012–20°C (feels 19°C) · 9 rain days (120h) · 248 sun hours · 63% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (very high)
July
9/1018–29°C · 0 rain days (8h) · 312 sun hours · 49% humidity · Quiet crowd · UV 9 (very high)
September
9/1017–26°C · 7 rain days (86h) · 241 sun hours · 58% humidity · Busy crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)
October
8/1016–23°C · 11 rain days (129h) · 202 sun hours · 65% humidity · Moderate crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)
November
8/1012–19°C · 9 rain days (100h) · 170 sun hours · 73% humidity · Peak crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
December
7/1010–16°C (feels 14°C) · 9 rain days (126h) · 168 sun hours · 77% humidity · Moderate crowd · UV 2 (low)
Comparisons people search for
Pairs validated by Google Autocomplete demand — only pairs people actually compare.
Frequently asked questions about visiting Lisbon
When is the best time to visit Lisbon?
May is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 15–23°C (4 rainy days). The top three months by score are May, June, August.
What is the worst time to visit Lisbon?
December is the lowest-scoring month (7/10). Typical conditions: 10–16°C (9 rainy days).
When are crowds lowest in Lisbon?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in August. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Lisbon have good weather but fewer tourists?
May (climate 10/10, crowd index 14) and June (climate 9/10, crowd index 16) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Lisbon by month?
UV peaks at 9 (very high) in July and is lowest in January at 2 (low). Monthly peak values: Jan 2, Feb 3, Mar 4, Apr 6, May 7, Jun 8, Jul 9, Aug 8, Sep 6, Oct 4, Nov 2, Dec 2. July, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
What is the UV index in Lisbon in July?
July is the peak UV month in Lisbon, with a daily-peak UV index of 9 (very high). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).
How high can UV get in Lisbon on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 8 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, March, April, May, June, September, October, November. Plan sun protection for the worst case, not the average.
Is air quality in Lisbon bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 8 months: January, February, March, April, August, October, November, December. The worst month is February with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 25 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.