Sintra

Lisbon Region Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Lisbon Region, Portugal in September.

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Lisbon Cascais Ericeira Sintra

Planning a trip to Lisbon Region, Portugal this September? Here's what you need to know about the weather:

What to Expect in Lisbon Region in September

Lisbon Region, Portugal is a region in Portugal. September in Lisbon Region generally has temperatures that range from pleasant to warm, with precipitation levels ranging from low to moderate. September is a summer month.

Temperatures

During the day the temperature is pleasant in Azoia at 21°C (70°F) and warm in Canha at 30°C (86°F). As night falls, temperatures generally drop to 16°C (61°F) in Canha and 18°C (64°F) in Azoia.

To explore the conditions in Lisbon Region, Portugal in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From low rainfall in Portinho da Arrábida with an average of 29 mm (1.1 in) to moderate rainfall in Vila Franca de Xira with 34 mm (1.3 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in September. Lisbon typically receives 280 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Lisbon Region by month

Pick a month to see the average temperature, rainfall and sunshine in Lisbon Region - and find the best time to visit. (based on Lisbon)

January15°C (59°F) February16°C (61°F) March18°C (64°F) April19°C (66°F) May22°C (72°F) June25°C (77°F) This monthJuly27°C (81°F) August27°C (81°F) September25°C (77°F) October22°C (72°F) November18°C (64°F) December16°C (61°F)
Best Time to Visit Lisbon Region →

Best Places to Visit in Lisbon Region in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Lisbon Region.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Lisbon Region

What is the weather like in September for some of the most popular destinations in Lisbon Region, Portugal?

Temperature range in Lisbon Region (September)

Precipitation variation in Lisbon Region (September)

Lisbon

In September Lisbon generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 17°C (63°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
27°C (81°F)
25°C (77°F)
22°C (72°F)
Min temperature
18°C (64°F)
17°C (63°F)
15°C (59°F)
Monthly sun hours
350 hours
280 hours
210 hours
Monthly rainfall
5.7 mm (0.2 in)
32 mm (1.3 in)
80 mm (3.1 in)
Monthly rainy days
2 days
6 days
11 days
Weather conditions
excellent
excellent
excellent
Climate in Lisbon →

Cascais

In September Cascais generally has pleasant temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 18°C (64°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
22°C (72°F)
22°C (72°F)
21°C (70°F)
Min temperature
18°C (64°F)
18°C (64°F)
17°C (63°F)
Monthly sun hours
355 hours
278 hours
233 hours
Monthly rainfall
5 mm (0.2 in)
31 mm (1.2 in)
82 mm (3.2 in)
Monthly rainy days
2 days
6 days
11 days
Weather conditions
excellent
excellent
excellent
Climate in Cascais →

Ericeira

In September Ericeira generally has pleasant temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 18°C (64°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
23°C (73°F)
22°C (72°F)
20°C (68°F)
Min temperature
18°C (64°F)
18°C (64°F)
16°C (61°F)
Monthly sun hours
355 hours
278 hours
233 hours
Monthly rainfall
6.9 mm (0.3 in)
32 mm (1.3 in)
89 mm (3.5 in)
Monthly rainy days
2 days
6 days
11 days
Weather conditions
excellent
excellent
excellent
Climate in Ericeira →

Sintra

In September Sintra generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 18°C (64°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
23°C (73°F)
23°C (73°F)
21°C (70°F)
Min temperature
18°C (64°F)
18°C (64°F)
16°C (61°F)
Monthly sun hours
355 hours
278 hours
233 hours
Monthly rainfall
5.7 mm (0.2 in)
32 mm (1.3 in)
85 mm (3.3 in)
Monthly rainy days
2 days
6 days
11 days
Weather conditions
excellent
excellent
excellent
Climate in Sintra →

Sesimbra

In September Sesimbra generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 18°C (64°F) and low monthly rainfall. So on average the conditions are excellent that month.

« August
September
October »
August
September
October
Max temperature
24°C (75°F)
23°C (73°F)
21°C (70°F)
Min temperature
19°C (66°F)
18°C (64°F)
17°C (63°F)
Monthly sun hours
350 hours
280 hours
210 hours
Monthly rainfall
4.2 mm (0.2 in)
29 mm (1.1 in)
77 mm (3 in)
Monthly rainy days
2 days
5 days
10 days
Weather conditions
excellent
excellent
excellent
Climate in Sesimbra →

Is your destination not in the list? Have a look at all destinations in Lisbon Region, in Portugal.

In our records: Portugal September extremes

Notable September records observed across cities in Portugal in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest September day in Portugal brought 300 mm (12 in) in Santa Maria Island on September 22, 1982.

Popular cities in September

Day & night temperatures, rainfall and average weather in Lisbon Region in September.

City Weather Day temp Night temp Rainfall
Lisbon 25°C (77°F) 17°C (63°F) 32 mm (1.3 in)
Cascais 22°C (72°F) 18°C (64°F) 31 mm (1.2 in)
Ericeira 22°C (72°F) 18°C (64°F) 32 mm (1.3 in)
Sintra 23°C (73°F) 18°C (64°F) 32 mm (1.3 in)
Sesimbra 23°C (73°F) 18°C (64°F) 29 mm (1.1 in)
Costa da Caparica 24°C (75°F) 18°C (64°F) 31 mm (1.2 in)

Lisbon Region weather in September: frequently asked questions

What is the weather like in Lisbon Region, Portugal in September?

Lisbon Region, Portugal typically experiences excellent weather in September, part of the summer season. Daytime highs in Lisbon average around 25°C (77°F), and temperatures drop to about 17°C (63°F) at night.

What is the average temperature in Lisbon Region, Portugal in September?

In Lisbon, the average daytime high in September is 25°C (77°F), while nighttime temperatures drop to around 17°C (63°F).

Does Lisbon Region, Portugal get a lot of rain in September?

Not particularly. Lisbon averages just 32 mm (1.3 in) of rain in September, making it a mostly dry month for Lisbon Region, Portugal.

Is September a Good Time to Visit Lisbon Region, Portugal?

We believe that September is one of the best times to visit Lisbon Region, Portugal with overall excellent weather in Lisbon.

On average, the best time to visit Lisbon Region, Portugal is in May, June, July, August, September and October with generally excellent weather in Lisbon. The weather in January, February and December, on the other hand, tends to be good.

Interested in more climate information?

We have much more information about the climate in Lisbon Region.

Weather and climate has detailed information for every country in the world. Are you going to Portugal? Get detailed historical weather averages for many cities in Portugal.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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