Monthly climate guide
Jaca weather in September
September in Jaca is typically warm, with average daytime highs around 22°C (72°F) and night-time lows near 11°C (51°F). The month usually brings about 37 mm of rain (fairly dry) and is a mix of sun and cloud. Daytime highs are 4°C cooler than August and 5°C warmer than October.
What stands out in September
- Evenings cool off sharply: the daily range is around 12°C, so pack a layer.
- Just 50 km apart, but Jaca runs about 5°C cooler than Huesca this month.
- In Jaca, September is early autumn.
- It cools down fast from here: October is about 5°C cooler.
Avg high
22°C
72°F
Avg low
11°C
51°F
Rainfall
37 mm
fairly dry
Humidity
66%
relative
Sky
46%
cloud · a mix of sun and cloud
Jaca weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 7°C / 44°F | -1°C / 31°F | 70 mm | 81% | 62% |
| February | 7°C / 45°F | -1°C / 29°F | 57 mm | 78% | 59% |
| March | 11°C / 52°F | 1°C / 34°F | 67 mm | 75% | 63% |
| April | 15°C / 58°F | 4°C / 39°F | 73 mm | 73% | 67% |
| May | 18°C / 64°F | 7°C / 44°F | 65 mm | 70% | 61% |
| June | 23°C / 73°F | 11°C / 51°F | 57 mm | 66% | 54% |
| July | 26°C / 79°F | 14°C / 56°F | 38 mm | 61% | 42% |
| August | 26°C / 80°F | 14°C / 57°F | 32 mm | 61% | 42% |
| September | 22°C / 72°F | 11°C / 51°F | 37 mm | 66% | 46% |
| October | 18°C / 64°F | 7°C / 45°F | 55 mm | 74% | 52% |
| November | 11°C / 51°F | 3°C / 37°F | 77 mm | 82% | 63% |
| December | 8°C / 47°F | 1°C / 33°F | 54 mm | 81% | 60% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is September a good time to visit Jaca?
Compare the months in the chart above to find your ideal window.
Best time to visit Jaca →Other Spain cities in September
Cite or embed this data
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Jaca weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/spain/jaca/september
<a href="https://weathercompare.eu/weather/spain/jaca/september">Jaca weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/spain/jaca" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Jaca weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/spain/jaca/september">Jaca weather in September</a> – WeatherCompare</p>
Jaca in September: quick answers
Is September a good time to visit Jaca?
Yes. September is one of the best months for Jaca, with highs around 22°C and about 37 mm of rain.
How warm is Jaca in September?
Average highs are about 22°C (72°F) and average lows about 11°C (51°F), based on 10 years of daily data.
Does it rain a lot in Jaca in September?
Jaca typically gets around 37 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Jaca (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.