Weather in Vilamoura in August

How August compares

August is the 2nd warmest month of the year in Vilamoura. Within Portugal it is 6th of 13 (Portugal in August). Against London's average high of 21.4°C in August, Vilamoura is 7.3°C warmer by day and 6.4°C warmer at night.

Daytime and night-time in August

The typical August day in Vilamoura peaks at 28.7°C, but that is an average: the warmest 10% of days reach 31.7°C or more. About 94% of days top 25°C and 1 in 3 pass 30°C. Nights average 19.9°C; one night in ten drops to 17.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 38.6°C (2020-08-01) and the coldest night 15.5°C (2000-08-24).

Rain in August

Dry (3 rainy days or fewer): about 1 days with 1 mm or more, 3 mm in total. Year to year it varies a lot - the wettest August was 1997 with 15 mm, the driest 1991 with 0 mm. Humidity averages 60%.

Sea temperature in August

The sea averages 20.9°C - bracing (18-22°c). Depending on the year it ranges from 19.6°C to 21.8°C. This is the warmest the sea gets here all year.

Sunshine and daylight

Around 11.3 hours of sunshine a day (estimated from cloud cover), 13.4 hours of daylight: the sun rises about 06:49 and sets about 20:25 local time in mid-August. Average cloud cover is 15%.

Is August a good time to visit Vilamoura?

Yes - it is one of the better months: hot days, little rain and long sunny days. The best months for Vilamoura on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug, Sep.

Hot afternoons call for a slower pace

Expect summer heat rather than just pleasantly warm weather. Days reach 25°C on 94% of occasions, while 30% reach 30°C, so pack for hot afternoons even if you do not enjoy sitting in the sun. The hottest days can make extended walks uncomfortable; mornings and later in the day are more sensible times to be active. Loose, light clothing, a hat and ready access to water will be useful. August suits travellers who want warmth to be a reliable part of their holiday, but it is a less comfortable choice if avoiding heat matters more than keeping rain out of your plans.

Very little rain, with long sunny days

Rain is unlikely to dictate your holiday plans: August averages about 1 rainy day. That makes outdoor time a reasonable default, though it is not a promise that every day will stay dry. Sunshine averages about 11.3 hours within 13.4 hours of daylight, giving you room to take a shaded break when the heat is strongest without losing the whole afternoon. Sun protection deserves more space in your packing than wet-weather gear. The benefit is flexibility: you need not squeeze every outdoor plan into the midday hours. If you dislike prolonged sunshine, plan shade into your day rather than treating it as an occasional fallback.

The sea is refreshing, not especially warm

The sea is the main qualification to August's hot-weather appeal. At an average of 20.9°C, it is bracing rather than comfortably warm, with year-to-year averages ranging from 20°C to 22°C. That can be welcome after time in the heat, but travellers who like lingering in warm water may find it less inviting than expected. Air temperature is not a reliable guide to how the water will feel when you first get in. Choose August for sunshine and warm days rather than for bath-like swimming conditions. If cool water tends to put you off, keep your swimming plans flexible rather than making long dips the focus of the holiday.