Portugal's southern coast: limestone sea cliffs, sheltered coves and the most reliable sunshine in mainland Europe. Daytime highs in the Algarve run from about 15 °C in January to 28 °C in August, an annual range of roughly 13 °C.
Measured against a beach trip, the conditions hold up June to October. June is the most consistent single month: highs near 26 °C, nights around 17 °C, and roughly 9 mm of rain across the month.
The binding constraint here is temperature and rainfall — that is what rules months out, not any composite judgement. Rainfall is sharply seasonal: November averages 74 mm against 0 mm in July, so the wet season is the real planning constraint rather than heat or cold. January is the weakest month on these criteria.
May sit just outside the window — part of the month works and part does not. These are usually the interesting weeks: conditions are close to the peak-season answer while prices and crowds are not. The map lets you check them fortnight by fortnight rather than trusting a monthly average.
Month by month
| Month | High °C | Low °C | Precip mm | Wet days |
|---|---|---|---|---|
| January | 15 | 9 | 59 | 8.1 |
| February | 16 | 10 | 55 | 6.5 |
| March | 17 | 11 | 61 | 8.4 |
| April | 19 | 12 | 49 | 7.5 |
| May | 22 | 15 | 29 | 5.2 |
| June | 26 | 17 | 9 | 1.7 |
| July | 28 | 19 | 0 | 0.2 |
| August | 28 | 19 | 5 | 0.5 |
| September | 26 | 18 | 26 | 3.4 |
| October | 22 | 16 | 58 | 7.6 |
| November | 18 | 13 | 74 | 7.9 |
| December | 16 | 10 | 73 | 8.5 |
Ticked rows are months where every hard requirement for a beach trip is met across at least half the month.
Open Algarve on the map →Nearby regions
Figures are 30-year climatology sampled at Faro, Lagos, Loule, Tavira and Portimao, averaged across those locations, from ERA5-Land reanalysis fitted with a harmonic seasonal cycle and a trend term, evaluated for 2026. Sampling named towns rather than averaging the whole region avoids blending valley and mountain conditions into a figure true of neither. Cells are about 0.08° wide, from ERA5-Land's 0.1° grid, which is itself driven by a 0.25° (~28 km) atmospheric reanalysis — so individual valleys, sheltered bays and single summits are not resolved. In steep terrain read these as conditions for the wider area rather than for one village. They describe typical conditions, not a forecast. Read how the climatology is built.