Suhu rata-rata tahunan di Montasik adalah +26.7°. Bulan terpanas adalah Juli (rata-rata siang +30.9°), dan terdingin Januari (rata-rata malam +23°). Chove cerca de 2288 mm por ano, com pico em November (362 mm). Data merupakan rata-rata iklim 60 tahun terakhir dan rekor dari 66 tahun pengamatan.
| Bulan | Siang | Malam | Curah hujan | Hari hujan | Rekor maks. | Rekor min. |
|---|---|---|---|---|---|---|
| Januari | +28.8° | +23° | 150 mm | 20 | +32.3° (2020) | +18.8° (2023) |
| Februari | +29.5° | +23.2° | 113 mm | 18 | +33.8° (2020) | +19.1° (2019) |
| Maret | +29.9° | +23.7° | 165 mm | 23 | +35.1° (2024) | +19.8° (2024) |
| April | +30.1° | +24.1° | 211 mm | 26 | +34.7° (2024) | +20.6° (2023) |
| Mei | +30.3° | +24.4° | 220 mm | 22 | +36° (2024) | +22.1° (2022) |
| Juni | +30.8° | +24.3° | 96 mm | 14 | +37° (2023) | +21° (2025) |
| Juli | +30.9° | +24.1° | 106 mm | 15 | +38.7° (2024) | +20° (2019) |
| Agustus | +30.8° | +24.1° | 121 mm | 16 | +37.8° (2024) | +20.8° (2022) |
| September | +30.1° | +23.8° | 187 mm | 20 | +36.9° (2019) | +21° (2022) |
| Oktober | +29.1° | +23.5° | 286 mm | 25 | +34.8° (2025) | +19.9° (2021) |
| November | +28.5° | +23.3° | 362 mm | 27 | +33.5° (2025) | +20.5° (2017) |
| Desember | +28.3° | +23.2° | 272 mm | 25 | +31.4° (2024) | +19.7° (1996) |