Azores · Month comparison
August vs May
May ranks #1 overall vs August at #7. The hydrangea season begins — the Azores in full flower, whale diversity at its peak, and conditions at their most photogenic.
August
#7 of 12 months
Strong option
Still peak season — hottest and sunniest month, maximum visitors, and the trail networks at their most accessible.
- ↑August sea temperatures peak at 24°C — the warmest water of the year for swimming at the volcanic pools; Biscoitos on Terceira (a series of natural lava rock pools in the Atlantic fringe) and the Mosteiros beach pools on São Miguel's west coast are at their most comfortable
- ↑Sunset paddleboarding on the Lagoa das Furnas: the caldera lake on São Miguel at sunset in August — with steam rising from the geothermal vents on the far shore and the surrounding mountains catching the gold light — is one of the most distinctive experiences the Azores offers; rental equipment is available at the lake shore
May
#1 of 12 months
Best match
The hydrangea season begins — the Azores in full flower, whale diversity at its peak, and conditions at their most photogenic.
- ↑Hydrangea peak season begins in late May on São Miguel and Faial: the volcanic roads disappear between walls of blue, pink, and white Hortensia so dense that the landscape is defined by them; the Sete Cidades crater lake rim road and the Faial cliffs above Capelo are the most spectacular; the combination of vivid blue flowers, black lava stone, and the turquoise lake surface below is the defining Azorean landscape image
- ↑May whale watching is outstanding — blue whales and fin whales are reliably present before they depart for northern feeding grounds, sperm whales remain year-round, and bottlenose and common dolphins are visible on nearly every trip; the Azores Whale Watch operators in Lajes do Pico and Madalena use traditional land-based whale spotting techniques inherited from the whaling era
| Factor | August | May |
|---|---|---|
| Weather score | 9 | 7 |
| Value score | 4 | 7 |
| Crowd score | 3 | 7 |
| Events score | 6 | 7 |
| Atmosphere | 7 | 9 |
| Avg high temp | 27°C | 21°C |
| Monthly rain | 20mm | 50mm |
| Daily sunshine | 9.5hrs | 7.5hrs |
August trade-offs
- ↓August is the busiest month in the Azores — the combination of Portuguese national holidays, Azorean diaspora family returns, and European school holidays makes it the most crowded and least authentic month; the Azores' appeal as a wild, empty Atlantic destination is most compromised in August
- ↓Prices are at absolute maximum — hotel and flight costs are 60–80% above their winter equivalents; Airbnb and guesthouse options in Ponta Delgada and Horta reach prices comparable to Lisbon or Porto
- ↓The Princess Alice Bank diving trips (the signature deep-water experience for manta rays and hammerheads) are often overbooked in August; book at least 6 weeks in advance for a July–August departure
May trade-offs
- ↓May is the beginning of the European tourist season — Ponta Delgada on São Miguel sees a meaningful increase in visitors from Lisbon and Northern Europe; the best guided whale watch operators, the most popular trailheads (Sete Cidades, Lagoa do Fogo), and the standout accommodation start booking out at the short end
- ↓Rainfall is still possible (50mm) — the Azores Atlantic location means even the best months can deliver a wet day or two; the Furnas caldeira valley and the Lagoa do Fogo crater lake are sometimes in cloud even in May
- ↓Senhor Santo Cristo festival crowds in Ponta Delgada (if falling in May) can temporarily pack the city's infrastructure beyond capacity — accommodation within 5km of the city centre is essentially unavailable at any price during the festival weekend
Scores compare months within Azores. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →