Mid-Atlantic volcanic islands — crater lakes, hydrangeas and weather that changes by the hour. Daytime highs in the Azores run from about 15 °C in February to 23 °C in August, an annual range of roughly 8 °C.
Measured against a hiking trip, the conditions hold up May to September. June is the most consistent single month: highs near 20 °C, nights around 17 °C, and roughly 42 mm of rain across the month.
The binding constraint here is rainfall — that is what rules months out, not any composite judgement. Rainfall is sharply seasonal: December averages 125 mm against 31 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.
October 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 | 13 | 112 | 15.2 |
| February | 15 | 13 | 89 | 12.7 |
| March | 15 | 13 | 94 | 14.8 |
| April | 16 | 13 | 90 | 13.7 |
| May | 17 | 15 | 74 | 11.7 |
| June | 20 | 17 | 42 | 9.0 |
| July | 22 | 19 | 31 | 7.3 |
| August | 23 | 20 | 46 | 9.4 |
| September | 22 | 20 | 68 | 12.8 |
| October | 20 | 18 | 91 | 15.3 |
| November | 18 | 15 | 107 | 13.3 |
| December | 16 | 14 | 125 | 16.2 |
Ticked rows are months where every hard requirement for a hiking trip is met across at least half the month.
Open Azores on the map →Nearby regions
Figures are 30-year climatology sampled at Ponta Delgada, Furnas, Angra do Heroismo and Horta, 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.