Month guide · Horta, Portugal
Horta in September: weather and what to expect
In September, Horta averages highs of 23°C and lows of 21°C, with about 12 rainy days and 64 mm of rain. Highs are 1°C cooler than in August and 2°C warmer than in October. Crowds in the Azores are high.
Is September a good time to visit?
Good for
No verdicts for Horta in September yet. They only use climate values that are precise enough to judge with.
Not ideal for
- Reliable dry weatherAbout 12 rainy days in the month
Daily highs through September
Town-level · ERA5-Land 1991-2020Highs fall about 1°C over the month. A day above 25°C happens in roughly 1 September in 4.
September in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in September 2027
No national or regional public holidays.
Local (municipal) holidays are not included.
Warmer in September
Where is warm in September →| Place | High | Rain days | From Horta |
|---|---|---|---|
| Benavente, Oeste e Vale do Tejo | 28°C | 5 | 1,716 km |
| Salvaterra de Magos, Oeste e Vale do Tejo | 28°C | 5 | 1,717 km |
| Vale de Santarém, Oeste e Vale do Tejo | 28°C | 5 | 1,721 km |
| Samora Correia, Oeste e Vale do Tejo | 27°C | 5 | 1,711 km |
| Pontével, Oeste e Vale do Tejo | 27°C | 5 | 1,712 km |
The nearest towns with a warmer September. Distances are in a straight line.
How September is changing
Town-level · ERA5-LandSeptember highs are 0.5°C warmer than in 1991-2000, and September rainfall is about the same (2016-2025 against 1991-2000). Days above 25°C in September went from 0.1 to 2.0 a year on average.
Questions about Horta in September
Is September a good time to visit Horta?
It is less suited to reliable dry weather (about 12 rainy days in the month).
How warm is Horta in September?
Average highs are 23°C and lows 21°C. August averages 24°C and October 21°C.
Does it rain much in Horta in September?
About 12 days have at least 1 mm of rain, with 64 mm in total over the month.
Is Horta busy in September?
In September 2025, nights booked through online platforms in the Azores were about 65% of the busiest month, which we count as high. The figure is for the whole region and leaves out hotels.
How long are the days in Horta in September?
About 12 h 30 min from sunrise to sunset in the middle of the month.
Sources
Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology