Weather by Month in Lisbon
Monthly Climate Comparison
The biggest temperature swing occurs between October and November, as typical highs shift from 21.7°C / 71.1°F to 17.2°C / 62.9°F (about 4.6°C / 8.2°F).
Jan
COOL
Feb
COOL
Mar
MILD
Apr
MILD
May
MILD
Jun
WARM
Jul
WARM
Aug
WARM
Sep
WARM
Oct
MILD
Nov
MILD
Dec
COOL
| Month | Low Temperature | High Temperature | Category |
|---|---|---|---|
| January | 9.2°C | 13.9°C | COOL |
| February | 9.4°C | 14.8°C | COOL |
| March | 10.8°C | 16.9°C | MILD |
| April | 12.3°C | 18.5°C | MILD |
| May | 14.4°C | 21.2°C | MILD |
| June | 16.7°C | 24.2°C | WARM |
| July | 18°C | 26.3°C | WARM |
| August | 18.6°C | 26.9°C | WARM |
| September | 17.8°C | 25°C | WARM |
| October | 15.9°C | 21.7°C | MILD |
| November | 12.4°C | 17.2°C | MILD |
| December | 10.2°C | 14.7°C | COOL |
August has the warmest typical feels-like highs (27.8°C / 82.1°F), while January is coolest (11.5°C / 52.6°F).
Jan
COOL
Feb
COOL
Mar
MILD
Apr
MILD
May
MILD
Jun
WARM
Jul
WARM
Aug
WARM
Sep
WARM
Oct
MILD
Nov
MILD
Dec
COOL
| Month | Low Feels Like | High Feels Like | Category |
|---|---|---|---|
| January | 6.2°C | 11.5°C | COOL |
| February | 6.3°C | 12.3°C | COOL |
| March | 8.1°C | 15.1°C | MILD |
| April | 10°C | 17.4°C | MILD |
| May | 12.6°C | 20.9°C | MILD |
| June | 15.7°C | 24.7°C | WARM |
| July | 17.3°C | 27.1°C | WARM |
| August | 18.3°C | 27.8°C | WARM |
| September | 17.6°C | 25.4°C | WARM |
| October | 15.1°C | 21.3°C | MILD |
| November | 10.3°C | 15.5°C | MILD |
| December | 7.4°C | 12.5°C | COOL |
December is wettest at 85.6 mm / 3.37 inches, while July is driest at 2.6 mm / 0.1 inches.
Jan
MODERATE
Feb
LIGHT
Mar
LIGHT
Apr
LIGHT
May
LIGHT
Jun
DRY
Jul
DRY
Aug
DRY
Sep
LIGHT
Oct
MODERATE
Nov
MODERATE
Dec
MODERATE
| Month | Baseline | Rainfall | Category |
|---|---|---|---|
| January | -30.6 mm | 69.4 mm | MODERATE |
| February | -30.6 mm | 54.9 mm | LIGHT |
| March | -30.6 mm | 55 mm | LIGHT |
| April | -30.6 mm | 52 mm | LIGHT |
| May | -30.6 mm | 40.2 mm | LIGHT |
| June | -30.6 mm | 12.8 mm | DRY |
| July | -30.6 mm | 2.6 mm | DRY |
| August | -30.6 mm | 3.6 mm | DRY |
| September | -30.6 mm | 32.6 mm | LIGHT |
| October | -30.6 mm | 78.5 mm | MODERATE |
| November | -30.6 mm | 84.9 mm | MODERATE |
| December | -30.6 mm | 85.6 mm | MODERATE |
June has the strongest peak UV (around index 8.4).
Jan
MODERATE
Feb
MODERATE
Mar
HIGH
Apr
HIGH
May
VERY HIGH
Jun
VERY HIGH
Jul
VERY HIGH
Aug
VERY HIGH
Sep
HIGH
Oct
MODERATE
Nov
MODERATE
Dec
MODERATE
| Month | Baseline | UV Index | Category |
|---|---|---|---|
| January | 0 | 3.7 | MODERATE |
| February | 0 | 5 | MODERATE |
| March | 0 | 6.7 | HIGH |
| April | 0 | 7.7 | HIGH |
| May | 0 | 8.1 | VERY HIGH |
| June | 0 | 8.4 | VERY HIGH |
| July | 0 | 8.4 | VERY HIGH |
| August | 0 | 8 | VERY HIGH |
| September | 0 | 7.1 | HIGH |
| October | 0 | 5.8 | MODERATE |
| November | 0 | 4.2 | MODERATE |
| December | 0 | 3.1 | MODERATE |
Daylight ranges from 9.5h in December to 14.8h in June.
Jan
SHORT
Feb
BALANCED
Mar
BALANCED
Apr
LONG
May
LONG
Jun
LONG
Jul
LONG
Aug
LONG
Sep
BALANCED
Oct
BALANCED
Nov
BALANCED
Dec
SHORT
| Month | Baseline | Daylight Hours | Category |
|---|---|---|---|
| January | 0h | 9.8h | SHORT |
| February | 0h | 10.8h | BALANCED |
| March | 0h | 12h | BALANCED |
| April | 0h | 13.2h | LONG |
| May | 0h | 14.3h | LONG |
| June | 0h | 14.8h | LONG |
| July | 0h | 14.6h | LONG |
| August | 0h | 13.6h | LONG |
| September | 0h | 12.4h | BALANCED |
| October | 0h | 11.2h | BALANCED |
| November | 0h | 10.1h | BALANCED |
| December | 0h | 9.5h | SHORT |
December is most humid (82.5%), while August is driest (69.9%).
Jan
MUGGY
Feb
MUGGY
Mar
MUGGY
Apr
HUMID
May
HUMID
Jun
HUMID
Jul
HUMID
Aug
HUMID
Sep
HUMID
Oct
MUGGY
Nov
MUGGY
Dec
MUGGY
| Month | Baseline | Humidity (avg) | Category |
|---|---|---|---|
| January | 65.5% | 81.7% | MUGGY |
| February | 65.5% | 79.1% | MUGGY |
| March | 65.5% | 76.1% | MUGGY |
| April | 65.5% | 74.5% | HUMID |
| May | 65.5% | 72.8% | HUMID |
| June | 65.5% | 71% | HUMID |
| July | 65.5% | 70% | HUMID |
| August | 65.5% | 69.9% | HUMID |
| September | 65.5% | 72.8% | HUMID |
| October | 65.5% | 77.7% | MUGGY |
| November | 65.5% | 79.9% | MUGGY |
| December | 65.5% | 82.5% | MUGGY |
July has the strongest typical average wind (18.4 km/h / 11.4 mph), while October is calmest (14.5 km/h / 9.0 mph).
Jan
CALM
Feb
CALM
Mar
CALM
Apr
CALM
May
CALM
Jun
CALM
Jul
CALM
Aug
CALM
Sep
CALM
Oct
CALM
Nov
CALM
Dec
CALM
| Month | Baseline | Wind (avg) | Category |
|---|---|---|---|
| January | 12.9 km/h | 15.8 km/h | CALM |
| February | 12.9 km/h | 16.1 km/h | CALM |
| March | 12.9 km/h | 15.9 km/h | CALM |
| April | 12.9 km/h | 16.2 km/h | CALM |
| May | 12.9 km/h | 16.7 km/h | CALM |
| June | 12.9 km/h | 17 km/h | CALM |
| July | 12.9 km/h | 18.4 km/h | CALM |
| August | 12.9 km/h | 17.2 km/h | CALM |
| September | 12.9 km/h | 14.6 km/h | CALM |
| October | 12.9 km/h | 14.5 km/h | CALM |
| November | 12.9 km/h | 15.5 km/h | CALM |
| December | 12.9 km/h | 16 km/h | CALM |
January is windiest by P95 gust signal (61.6 km/h / 38.3 mph).
Jan
VERY WINDY
Feb
VERY WINDY
Mar
VERY WINDY
Apr
VERY WINDY
May
VERY WINDY
Jun
VERY WINDY
Jul
VERY WINDY
Aug
VERY WINDY
Sep
WINDY
Oct
VERY WINDY
Nov
VERY WINDY
Dec
VERY WINDY
| Month | Baseline | Wind (gusts) | Category |
|---|---|---|---|
| January | 0 km/h | 61.6 km/h | VERY WINDY |
| February | 0 km/h | 59.8 km/h | VERY WINDY |
| March | 0 km/h | 59.4 km/h | VERY WINDY |
| April | 0 km/h | 56.9 km/h | VERY WINDY |
| May | 0 km/h | 54 km/h | VERY WINDY |
| June | 0 km/h | 50.8 km/h | VERY WINDY |
| July | 0 km/h | 52.9 km/h | VERY WINDY |
| August | 0 km/h | 51.5 km/h | VERY WINDY |
| September | 0 km/h | 49.3 km/h | WINDY |
| October | 0 km/h | 57.2 km/h | VERY WINDY |
| November | 0 km/h | 57.6 km/h | VERY WINDY |
| December | 0 km/h | 60.1 km/h | VERY WINDY |
November has the most rain days (~12.4), while July has the fewest (~1.5). Rain days count the average number of days in a month with measurable rain (about 0.1 mm or more).
Jan
FREQUENT
Feb
FREQUENT
Mar
FREQUENT
Apr
FREQUENT
May
SOME
Jun
SOME
Jul
RARE
Aug
RARE
Sep
SOME
Oct
FREQUENT
Nov
FREQUENT
Dec
FREQUENT
| Month | Baseline | Rain Days | Category |
|---|---|---|---|
| January | -2.9 days | 11.3 days | FREQUENT |
| February | -2.9 days | 9.4 days | FREQUENT |
| March | -2.9 days | 10.1 days | FREQUENT |
| April | -2.9 days | 10.7 days | FREQUENT |
| May | -2.9 days | 8.3 days | SOME |
| June | -2.9 days | 4.4 days | SOME |
| July | -2.9 days | 1.5 days | RARE |
| August | -2.9 days | 1.6 days | RARE |
| September | -2.9 days | 6 days | SOME |
| October | -2.9 days | 11.5 days | FREQUENT |
| November | -2.9 days | 12.4 days | FREQUENT |
| December | -2.9 days | 11.8 days | FREQUENT |
January has the most heavy rain/washout risk days (~5). Heavy rain days are the average number of days likely to bring stronger downpours that can disrupt outdoor plans.
Jan
FREQUENT
Feb
FREQUENT
Mar
FREQUENT
Apr
FREQUENT
May
FREQUENT
Jun
OCCASIONAL
Jul
RARE
Aug
RARE
Sep
OCCASIONAL
Oct
FREQUENT
Nov
FREQUENT
Dec
FREQUENT
| Month | Baseline | Heavy Rain Days | Category |
|---|---|---|---|
| January | 0 days | 5 days | FREQUENT |
| February | 0 days | 4 days | FREQUENT |
| March | 0 days | 4 days | FREQUENT |
| April | 0 days | 3 days | FREQUENT |
| May | 0 days | 3 days | FREQUENT |
| June | 0 days | 1 days | OCCASIONAL |
| July | 0 days | 0 days | RARE |
| August | 0 days | 0 days | RARE |
| September | 0 days | 2 days | OCCASIONAL |
| October | 0 days | 5 days | FREQUENT |
| November | 0 days | 5 days | FREQUENT |
| December | 0 days | 5 days | FREQUENT |
July has the highest heat-risk day count (~2 days). Heat days are the average number of days that exceed our location-specific heat-risk threshold.
Jan
LOW
Feb
LOW
Mar
LOW
Apr
LOW
May
LOW
Jun
LOW
Jul
ELEVATED
Aug
ELEVATED
Sep
LOW
Oct
LOW
Nov
LOW
Dec
LOW
| Month | Baseline | Heat Days | Category |
|---|---|---|---|
| January | 0 days | 0 days | LOW |
| February | 0 days | 0 days | LOW |
| March | 0 days | 0 days | LOW |
| April | 0 days | 0 days | LOW |
| May | 0 days | 0 days | LOW |
| June | 0 days | 1 days | LOW |
| July | 0 days | 2 days | ELEVATED |
| August | 0 days | 2 days | ELEVATED |
| September | 0 days | 1 days | LOW |
| October | 0 days | 0 days | LOW |
| November | 0 days | 0 days | LOW |
| December | 0 days | 0 days | LOW |
Rain & Sunshine Patterns
Driest Months
#1 July
Best for: outdoor activities & sightseeing
#2 August
Best for: outdoor activities & sightseeing
#3 June
Best for: outdoor activities & sightseeing
Wettest Months
#1 December
Expect: possible showers, pack waterproofs
#2 November
Expect: possible showers, pack waterproofs
#3 October
Expect: possible showers, pack waterproofs
UV & Sun Protection Calendar
High UV Alert:
March, April, May, June, July, August, September require serious sun protection.
Jan
4
MODERATE
Feb
5
MODERATE
Mar
7
HIGH
Apr
8
HIGH
May
8
VERY-HIGH
Jun
8
VERY-HIGH
Jul
8
VERY-HIGH
Aug
8
VERY-HIGH
Sep
7
HIGH
Oct
6
MODERATE
Nov
4
MODERATE
Dec
3
MODERATE
Extreme (11+)
Avoid sun during midday, use SPF 50+
Very High (8-10)
Essential sun protection required
High (6-7)
Use SPF 30+, wear hat & sunglasses
Moderate (3-5)
Sun protection recommended
Low-Moderate (1-2)
Minimal protection needed
Low (0)
No protection required
Daylight Hours
Daylight varies from 9.5 hours in December (winter) to 14.8 hours in June (summer), which is a difference of 5.3 hours.
Shortest Days
December
9.5h
Average Sunrise:07:46
Average Sunset:17:17
Plan daytime activities for midday when light is best. Early sunsets mean evening plans should account for darkness.
Longest Days
June
14.8h
Average Sunrise:05:12
Average Sunset:20:01
Extended daylight perfect for evening activities and late dining. You can fit more sightseeing into each day.
Wind & Humidity Overview
Wind Conditions
Average wind speed
Windiest months:
July (
18 km/h)
August (
17 km/h)
June (
17 km/h)
Packing tip: Conditions are generally calm, but a light layer is always handy.
Humidity Levels
Average humidity
76%
Most humid:
December (
83%)
Least humid:
August (
70%)
Packing tip: Choose breathable, natural fabrics like cotton or linen for comfort in humid conditions.
Seasonal Overview
Northern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:
Winter
January, February, December
Avg High
Avg Low
Avg Rain
Cool weather; bring layers and a jacket
Spring
March, April, May
Avg High
Avg Low
Avg Rain
Variable conditions; layer your clothing
Summer
June, July, August
Avg High
Avg Low
Avg Rain
Warm and pleasant; perfect for travel
Autumn
September, October, November
Avg High
Avg Low
Avg Rain
Mild conditions; transitional weather
Risk Ranking Table
| Ranking Goal | #1 | #2 | #3 | #4 |
|---|---|---|---|---|
| Lowest rain risk | Jul 0 risk days | Aug 0 risk days | Jun 1 risk days | Sep 2 risk days |
| Lowest heatwave risk | Jan 0 risk days | Feb 0 risk days | Mar 0 risk days | Apr 0 risk days |
| Lowest cold risk | May 0 risk days | Jun 0 risk days | Jul 0 risk days | Aug 0 risk days |
| Lowest wind disruption risk | Sep 49 km/h | Jun 51 km/h | Aug 52 km/h | Jul 53 km/h |
| Most comfortable evenings | Aug 90 / 100 | Jul 88 / 100 | Sep 87 / 100 | Jun 83 / 100 |
| Best outdoor reliability | Jun 71 / 100 | May 65 / 100 | Sep 65 / 100 | Aug 62 / 100 |
Monthly Details
Click any month for detailed weather information and packing advice.
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View Best Time to VisitFrequently Asked Questions
When is Lisbon warmest?
August is typically the warmest month in Lisbon, with average high temperatures reaching around 27°C (81°F). This is peak summer weather, ideal for outdoor activities and sightseeing.
When is Lisbon coldest?
January is usually the coldest month, with average low temperatures dropping to around 9°C (48°F). Pack warm layers if visiting during this time, especially for evening activities.
When does Lisbon get the most rain?
December typically sees the most rainfall in Lisbon, averaging around 86mm (3.4 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.
What is the driest month in Lisbon?
July is typically the driest month, with average rainfall of just 3mm (0.1 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.
How much does the temperature vary in Lisbon throughout the year?
Temperatures in Lisbon range from average lows of 14°C (57°F) to highs of 20°C (68°F). This variation means you'll want to pack differently depending on when you visit, as layers are key for adapting to the seasonal changes.
Do I need sun protection when visiting Lisbon?
Yes, sun protection is important in Lisbon. UV levels can reach 8 during peak months, which is considered very high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.