Santiago de Compostela in September
In September, Santiago de Compostela averages 23°C (73°F) during the day and 14°C (56°F) at night, with around 9 days of rain (65 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Occasional showers are likely but won't dominate.
September is a great month to visit Santiago de Compostela: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Santiago de Compostela
September is one of the warmest months in Santiago de Compostela (3rd of 12) and one of the driest months (10th of 12). Daytime temperature runs 5°C above the annual average (18°C). September runs 2°C cooler than August (25°C) and cools 3°C in October (20°C).
September sunrise & sunset in Santiago de Compostela
Times shown for Santiago de Compostela local time (Europe/Madrid), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Santiago de Compostela — September
Golden-hour and blue-hour windows for the 15th of September, in Santiago de Compostela's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Santiago de Compostela in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Santiago de Compostela's popularity.
Crowds & pricing — September in Santiago de Compostela
This is a busy month in Santiago de Compostela — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Santiago de Compostela
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Santiago de Compostela in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 12°C / 53°F | 5°C / 41°F | 177 mm | 15 | — |
| February | 13°C / 55°F | 5°C / 41°F | 141 mm | 14 | — |
| March | 14°C / 58°F | 6°C / 43°F | 133 mm | 14 | — |
| April | 17°C / 62°F | 8°C / 46°F | 111 mm | 15 | — |
| May | 20°C / 67°F | 10°C / 50°F | 79 mm | 11 | — |
| June | 22°C / 71°F | 13°C / 55°F | 78 mm | 11 | — |
| July | 25°C / 77°F | 15°C / 59°F | 26 mm | 6 | — |
| August | 25°C / 77°F | 15°C / 59°F | 40 mm | 7 | — |
| September | 23°C / 73°F | 14°C / 56°F | 65 mm | 9 | — |
| October | 20°C / 67°F | 11°C / 52°F | 176 mm | 14 | — |
| November | 15°C / 58°F | 8°C / 46°F | 176 mm | 17 | — |
| December | 13°C / 55°F | 6°C / 43°F | 187 mm | 15 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Santiago de Compostela in September →
Frequently asked questions
How hot is Santiago de Compostela in September?
In September, Santiago de Compostela averages a high of 23°C (73°F) and a low of 14°C (56°F) — generally mild and pleasant.
Does it rain a lot in Santiago de Compostela in September?
September sees occasional rain in Santiago de Compostela, with about 9 rainy days on average.
Is September a good time to visit Santiago de Compostela?
September is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Santiago de Compostela in September?
Pack light layers for warm days and cooler evenings. See the full September packing list for Santiago de Compostela for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.