Lagos, Algarve weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: July – September
What is the weather like in Lagos, Algarve in August?
In August, Lagos, Algarve is warm: daytime highs average 25 °C, and nights cool down to about 19 °C. The sea averages 19.7 °C – bracing, so a wetsuit helps for longer swims. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. All in all, August is an excellent month for a holiday in Lagos, Algarve.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 80 | 85 | 79 |
| Day | 25° | 25° | 24° |
| Night | 18° | 19° | 18° |
| Sea | 19° | 20° | 20° |
| Sun | 12 h | 11 h | 9 h |
| Rain days | 0 | 0 | 3 |
More details for August
- Daylight
- 13 h 38 min06:51 – 20:28
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or more
- Wind
- 22 km/haverage daily peak
- Cloud cover
- 20 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC+1Europe/Lisbon
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %39 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Lagos, Algarve in August: quick answers
Is Lagos, Algarve hot in August?
Warm rather than hot: in August, daytime highs in Lagos, Algarve average 25 °C and nights cool to about 19 °C.
Can you swim in Lagos, Algarve in August?
Only if you don't mind cold water: in August the sea averages just 19.7 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Lagos, Algarve in August?
It hardly ever rains.
Lagos, Algarve month by month
The whole year in Lagos, AlgarveAll destinations: PortugalWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)