Azores · Month comparison
October vs May
May ranks #1 overall vs October at #5. The hydrangea season begins — the Azores in full flower, whale diversity at its peak, and conditions at their most photogenic.
October
#5 of 12 months
Strong option
Autumn proper — the first Atlantic storms arrive, tourists recede, and the islands return to their wild character.
- ↑October whale watching recovers as autumn migration peaks — sei whales return on their southward journey and sperm whale activity is excellent in the rough-water upwellings; the whale watch experience in October's heavier seas is more physically demanding but more dramatic than summer
- ↑Autumn storms create the most spectacular version of the Azorean volcanic coast: the Atlantic swell hitting the lava cliffs at Ponta da Ferraria and the Mosteiros stacks on São Miguel generates spray photographs that do not exist in the summer flat-calm; storm watchers and seascape photographers specifically target October–November
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 | October | May |
|---|---|---|
| Weather score | 5 | 7 |
| Value score | 8 | 7 |
| Crowd score | 8 | 7 |
| Events score | 5 | 7 |
| Atmosphere | 7 | 9 |
| Avg high temp | 22°C | 21°C |
| Monthly rain | 80mm | 50mm |
| Daily sunshine | 6.5hrs | 7.5hrs |
October trade-offs
- ↓October rainfall at 80mm is significantly higher than summer — expect several rainy days per week and be ready to adapt plans; the crater lake views are frequently obscured by cloud in October
- ↓Inter-island ferry and flight disruptions increase with autumn storm frequency; buffer days between island departures are essential from October onwards
- ↓Swimming and sea activities cool off — 21°C water requires a 5mm wetsuit for comfortable dive sessions; the casual volcanic pool swimming of summer is uncomfortable without a wetsuit
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 →