Monthly weather forecast and climate
Lisbon, Portugal

The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle, seen on a sunny day
The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle, seen on a sunny day
The Portuguese capital has a subtropical-Mediterranean climate; with over 290 days of sunshine in a year, Lisbon is one of the best all-year-round cities to visit.

The summers in Lisbon are warm and sunny. Winters are short, rainy, and mild. Summer temperatures in Lisbon are quite tolerable. The warmest month is July, with mean temperatures of 24°C (75.2°F). Winter temperatures in Lisbon almost never go below freezing. January is, on average, the coldest month with a mean temperature of 11°C (51.8°F).

The gulf stream largely influences the climate in this metropolitan city. Hence rain predominantly falls during the winter months. Most precipitation falls in November and December, with December being the wettest month. Lisbon is mostly dry in June, July, and August. July, on average, is the driest month.
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Portugal's climate is generally mild, resulting in the fact that practically any time is a pleasant time to visit Lisbon. Nonetheless, the best times to visit are May, June, July, August, and September. Those months have excellent weather.
Although those are summer months, the temperature is not extraordinarily high. Moreover, cool breezes blow from the ocean and ease the heat creating a pleasant temperature. The skies are clear, and there are a lot of fun activities, carnivals, and festivals happening around this time. The weather allows for the exploration of Lisbon in its entirety. It is thus a great time to sample every bit of fun that the city has to offer. The ocean water during these months is excellent for swimming and other water-related fun activities.

Though there isn't the worst time to visit Lisbon, the winter months of December, January, and February are not ideal, as they are chilly and often rainy. The upside to visiting Lisbon during winter is the price of accommodation. They are substantially lower, as hotels are striving to attract tourists with special deals.

The winter's cold is worst in January. Temperatures remain at 11.7°C (53.1°F). Much of December's rain is gone, and now is the time to go out. Weather in January »

A tourist's itinerary should preferably involve indoor activities. Nonetheless, average temperatures begin to rise, averaging 12.2°C (54°F). Weather in February »

The skies tend to be overcast most of the time, but there's only a 17% chance of rain in March. This month is excellent for exploring the city's renowned tourist attraction sites. Weather in March »

Mean temperature of 15.6°C (60.1°F) makes April a fabulous month to visit Lisbon. The ocean waters are great for surfing with temperatures of 15°C (59°F). Weather in April »

Lisbon is fairly warm in May, with an average temperature of 18.3°C (64.9°F). The Bars, along with Tagus River, host numerous wine lovers at this time of year. Weather in May »

Lisbon comes to life with carnivals and celebrations in June. The skies are mostly sunny, with very little chance of rain. Weather in June »

Lisbon is in the middle of summer in July. The average temperature is 22.8°C (73°F). There's hardly any rain, and ocean water temperature is 18.3°C (64.9°F). Weather in July »

Almost anything done in Lisbon during August will be pleasurable. Visitors can enjoy sunbathing from a sun lounger or spend time enjoying a breath-taking panoramic view of the sunset. Weather in August »

The mean September temperature is 22.2°C (72°F), the sea water's 18.9°C (66°F), and the sky is primarily clear. The days are long and warm. Weather in September »

The weather is nice for tours and exploration - temperatures stand at a mean of 18.9°C (66°F), and the average chance of rain is 23%. Weather in October »

November is the wettest month in Lisbon; however, clouds are common in most days, and there's a decent chance of rain. Mean temperatures in November in Lisbon are 14.4°C (57.9°F). Weather in November »

Winter in Lisbon kicks in December; temperatures drop to 12.2°C (54°F), and most days are overcast and rainy. Weather in December »

What is the coldest month in Lisbon?

With an average high-temperature of 14.8°C (58.6°F) and an average low-temperature of 8.3°C (46.9°F), January is the coldest month.

How many days does it rain in Lisbon?

Throughout the year, in Lisbon, Portugal, there are 112 rainfall days, and 774mm (30.5") of precipitation is accumulated.

What is the driest month in Lisbon?

The month with the least rainfall in Lisbon is July when the rain falls for 2 days and typically collects 4.2mm (0.2") of precipitation.

What is the warmest month in Lisbon?

With an average high-temperature of 28.3°C (82.9°F) and an average low-temperature of 18.6°C (65.5°F), August is the warmest month.

What is the wettest month in Lisbon?

The month with the most rainfall in Lisbon is November when the rain falls for 13 days and typically aggregates up to 127.6mm (5") of precipitation.
Average temperature - Lisbon, Portugal
Average rainfall - Lisbon, Portugal

The wettest month (with the highest rainfall) is November (127.6mm).
The driest month (with the lowest rainfall) is July (4.2mm).

Average rainfall days - Lisbon, Portugal

Months with the highest number of rainy days are January, February and December (14 days).
Months with the lowest number of rainy days are July and August (2 days).

Average sea temperature - Lisbon, Portugal

The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

Average daylight / Average sunshine - Lisbon, Portugal

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, February, November and December (Average sunshine: 5).