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- Feels like
- Rain
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- Waves
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Right now in Olhão: clear skies, 20°C, feels like 21°C.
Expect a mostly clear week in Olhão, with temperatures easing from a high near 27°C on Wednesday down to around 17°C by Tuesday.
Daytime highs this week are close to the October average of 24°C.
Sunrise: 07:37 · Sunset: 18:57 · Day length: 11h 21m
Sea water: 20.2°C, warming slightly to around 21°C over the coming days
Wave height: 0.5m (min 0.5m on 2026-10-13, max 1.4m on 2026-10-15)
Olhão water temperature for the next 7 days · Sea temperature along the whole coast
Olhão is a Ria Formosa town of flat white rooftops and cube-shaped houses, with the largest fish market in the Algarve on its waterfront. It is a working place rather than a resort, and it has no ocean beach of its own: the sand lies out on the barrier islands, and ferries run from the quay to Armona and Culatra through the day. In between is a national park of channels, sandbanks and salt pans.
Summers are hot and dry at 28–30 °C, cooled a little by the breeze off the lagoon, and winters are mild at 16–17 °C with long sunny spells. The water in the Ria Formosa is shallow and sheltered, so it warms fast over the sandbanks and is among the mildest in the country, while the ocean side of the islands sits at about 18–19 °C in late summer.
| Month | Min (°C) | Max (°C) | Rainy days |
|---|---|---|---|
| January | 10.2 | 16.3 | 6.1 |
| February | 11.0 | 17.2 | 5.4 |
| March | 11.6 | 18.3 | 9.5 |
| April | 13.4 | 20.3 | 8.7 |
| May | 16.1 | 23.9 | 4.2 |
| June | 18.6 | 26.7 | 2.6 |
| July | 20.9 | 29.7 | 0.2 |
| August | 21.6 | 30.2 | 0.1 |
| September | 19.6 | 26.9 | 2.5 |
| October | 17.4 | 23.8 | 6.5 |
| November | 13.5 | 19.5 | 7.4 |
| December | 11.4 | 17.1 | 7.5 |
Going by Olhão's own averages, May is the most balanced month: highs near 24 °C and about 4 rainy days. The hottest month is August at 30 °C, and the wettest is March with 10 rainy days.
Averages for 2016–2025. A rainy day is one with at least 1 mm of precipitation.
August and September, when the ocean side of the islands reaches around 18–19 °C. The lagoon channels can feel warmer still on a sunny afternoon, particularly as the tide floods in over sandflats that have been baking all day.
By ferry. Boats leave the quay next to the markets for Armona and Culatra, and the crossing takes fifteen to thirty minutes depending on the island. Check the last return before you go, since the timetable thins out early and changes with the season.
Its fish market, the biggest in the Algarve, housed with the produce market in a pair of red-brick halls on the waterfront. The old quarter behind it has the cubist rooftops that give the town its look, and the Ria Formosa on its doorstep is one of the best birdwatching areas in the country.