Temperature & Rainfall Trends
Note: Trends are based on data recorded at Meteo San Sebastián - Arriola since 2012.
| Annual Avg Temperature Trend | ||||
| Month | Average since 2012 | Current Month | Difference | |
| January | 9.6°C | 11.0°C (2025) | 1.4°C
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| February | 10.5°C | 11.9°C (2025) | 1.4°C
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| March | 12.1°C | 11.8°C (2025) | -0.3°C
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| April | 13.5°C | 14.0°C (2025) | 0.5°C
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| May | 15.5°C | 14.6°C (2024) | -0.9°C
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| June | 18.6°C | 17.8°C (2024) | -0.8°C
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| July | 20.7°C | 20.5°C (2024) | -0.2°C
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| August | 20.9°C | 21.2°C (2024) | 0.3°C
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| September | 19.5°C | 17.4°C (2024) | -2.1°C
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| October | 17.4°C | 17.4°C (2024) | 0.0°C | |
| November | 13.5°C | 14.8°C (2024) | 1.3°C
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| December | 11.4°C | 10.5°C (2024) | -0.9°C
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| Average 12 Month Temperature since 2012: 15.29°C | ||||
| Current 12 Month Temperature: 15.26°C | ||||
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Current 12 Months Temperature Trend:
-0.0°C
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| Annual Avg Rainfall Trend | ||||
| Month | Average since 2012 | Current Month | Difference | |
| January | 135.4 mm | 113.4 mm (2025) | -22.0 mm
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| February | 97.0 mm | 77.8 mm (2025) | -19.2 mm
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| March | 84.4 mm | 115.8 mm (2025) |
31.4 mm
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| April | 107.8 mm | 88.6 mm (2025) | -19.2 mm
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| May | 123.9 mm | 165.6 mm (2024) | 41.7 mm
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| June | 133.6 mm | 177.4 mm (2024) | 43.8 mm
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| July | 78.1 mm | 55.4 mm (2024) | -22.7 mm
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| August | 89.5 mm | 111.8 mm (2024) | 22.3 mm
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| September | 145.9 mm | 268.0 mm (2024) | 122.1 mm
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| October | 168.8 mm | 383.0 mm (2024) | 214.2 mm
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| November | 236.3 mm | 152.8 mm (2024) | -83.5 mm
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| December | 179.1 mm | 231.0 mm (2024) | 51.9 mm
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| Average 12 Month Rainfall since 2012: 1,579.8 mm | ||||
| Rainfall for last 12 months: 1,940.6 mm | ||||
Current 12 Months Rainfall difference:
360.8 mm
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