Beach
Praia de São Lourenço
Lisbon · Portugal · Atlantic Ocean
39.0118, -9.4218 · Santo Isidoro, 3 km
- 18°Sea · August
- 24°High · August
- 10.6 hSunshine · July
Your month at the beach
Praia de São Lourenço in January
- 14°CAir, daytime high9°C at night
- 15°CSea temperature
- 4.4 hSunshine a day
- 11 daysRainy days in the month72 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in February
- 15°CAir, daytime high9°C at night
- 14°CSea temperature
- 6.0 hSunshine a day
- 9 daysRainy days in the month53 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in March
- 16°CAir, daytime high10°C at night
- 14°CSea temperature
- 7.0 hSunshine a day
- 9 daysRainy days in the month63 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in April
- 18°CAir, daytime high11°C at night
- 15°CSea temperature
- 8.6 hSunshine a day
- 10 daysRainy days in the month58 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in May
- 20°CAir, daytime high13°C at night
- 16°CSea temperature
- 10.0 hSunshine a day
- 7 daysRainy days in the month34 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in June
- 22°CAir, daytime high15°C at night
- 17°CSea temperature
- 10.3 hSunshine a day
- 3 daysRainy days in the month13 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in July
- 24°CAir, daytime high16°C at night
- 18°CSea temperature
- 10.6 hSunshine a day
- 1 dayRainy days in the month4 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in August
- 24°CAir, daytime high17°C at night
- 18°CSea temperature
- 10.3 hSunshine a day
- 2 daysRainy days in the month8 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in September
- 24°CAir, daytime high16°C at night
- 18°CSea temperature
- 8.6 hSunshine a day
- 5 daysRainy days in the month26 mm in total
- 16 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in October
- 21°CAir, daytime high15°C at night
- 18°CSea temperature
- 6.5 hSunshine a day
- 11 daysRainy days in the month84 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in November
- 17°CAir, daytime high12°C at night
- 17°CSea temperature
- 4.9 hSunshine a day
- 12 daysRainy days in the month93 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Praia de São Lourenço in December
- 15°CAir, daytime high9°C at night
- 15°CSea temperature
- 4.4 hSunshine a day
- 12 daysRainy days in the month67 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- ExcellentBathing water qualityOfficial EU classification, 2025 season
- AccessibleWheelchair accessOfficial list, Portuguese Environment Agency
- LifeguardedLifeguardsUsually only in the bathing season · OpenStreetMap
- 13Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap Places to stay near Praia de São Lourenço ↗
- 32 kmAirport: Cascais Airport (CAT)In a straight line; by road it is further Car hire at Cascais Airport (CAT) ↗
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
January from 2020 to 2025
In January 2025 the sea averaged 15.5 °C — 0.9 °C above the 1991–2020 average.
1991–2020 average: 14.6 °C
1991–2020 average: 14.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 14.8 °C — 0.7 °C above the 1991–2020 average.
1991–2020 average: 14.1 °C
1991–2020 average: 14.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 14.8 °C — 0.6 °C above the 1991–2020 average.
1991–2020 average: 14.2 °C
1991–2020 average: 16.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 15.9 °C — 1.0 °C above the 1991–2020 average.
1991–2020 average: 14.9 °C
1991–2020 average: 17.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 16.6 °C — 0.7 °C above the 1991–2020 average.
1991–2020 average: 15.9 °C
1991–2020 average: 20.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 17.3 °C — about the same as the 1991–2020 average.
1991–2020 average: 17.3 °C
1991–2020 average: 22.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 17.6 °C — 0.4 °C below the 1991–2020 average.
1991–2020 average: 18.0 °C
1991–2020 average: 23.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 18.3 °C — about the same as the 1991–2020 average.
1991–2020 average: 18.4 °C
1991–2020 average: 24.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 16.9 °C — 1.4 °C below the 1991–2020 average.
1991–2020 average: 18.3 °C
1991–2020 average: 23.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 17.1 °C — 0.5 °C below the 1991–2020 average.
1991–2020 average: 17.6 °C
1991–2020 average: 21.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 17.4 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 16.6 °C
1991–2020 average: 17.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 15.4 °C — about the same as the 1991–2020 average.
1991–2020 average: 15.4 °C
1991–2020 average: 14.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan15°4 h72 mm
- Feb14°6 h53 mm
- Mar14°7 h63 mm
- Apr15°9 h58 mm
- May16°10 h34 mm
- Jun17°10 h13 mm
- Jul18°11 h4 mm
- Aug18°10 h8 mm
- Sep18°9 h26 mm
- Oct18°6 h84 mm
- Nov17°5 h93 mm
- Dec15°4 h67 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Praia de São Lourenço: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 14 | 9 | 15 | 72 | 11 | 4.4 | 19 |
| February | 15 | 9 | 14 | 53 | 9 | 6.0 | 20 |
| March | 16 | 10 | 14 | 63 | 9 | 7.0 | 20 |
| April | 18 | 11 | 15 | 58 | 10 | 8.6 | 19 |
| May | 20 | 13 | 16 | 34 | 7 | 10.0 | 19 |
| June | 22 | 15 | 17 | 13 | 3 | 10.3 | 19 |
| July | 24 | 16 | 18 | 4 | 1 | 10.6 | 20 |
| Augustwarmest sea | 24 | 17 | 18 | 8 | 2 | 10.3 | 19 |
| September | 24 | 16 | 18 | 26 | 5 | 8.6 | 16 |
| October | 21 | 15 | 18 | 84 | 11 | 6.5 | 18 |
| November | 17 | 12 | 17 | 93 | 12 | 4.9 | 19 |
| December | 15 | 9 | 15 | 67 | 12 | 4.4 | 20 |
Swipe sideways to see the other columns.
Photos
Photos shared by their authors on Wikimedia Commons, with its colours adjusted.
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Plan your trip
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 4 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 13 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 4 km away |
| Bathing water quality | European Environment Agency | 0.0 km away |
| Wheelchair access | Official list, Portuguese Environment Agency | at this spot |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |