Suhu rata-rata tahunan di Genyem adalah +26.9°. Bulan terpanas adalah Oktober (rata-rata siang +30.5°), dan terdingin Agustus (rata-rata malam +23.4°). Chove cerca de 3042 mm por ano, com pico em April (291 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 | +29.9° | +23.9° | 259 mm | 28 | +34.2° (2021) | +21° (1975) |
| Februari | +29.8° | +23.8° | 251 mm | 26 | +34° (2025) | +21.5° (2019) |
| Maret | +30° | +23.9° | 275 mm | 29 | +34.7° (2022) | +21.2° (2018) |
| April | +30° | +23.9° | 291 mm | 29 | +34.8° (2024) | +22° (1965) |
| Mei | +30.2° | +24° | 244 mm | 29 | +34.2° (1961) | +21.8° (2019) |
| Juni | +29.7° | +23.7° | 238 mm | 28 | +33.7° (2022) | +21.3° (1972) |
| Juli | +29.6° | +23.4° | 250 mm | 28 | +35.3° (1997) | +21.7° (2018) |
| Agustus | +29.9° | +23.4° | 240 mm | 27 | +33.9° (2025) | +21.8° (2021) |
| September | +30.3° | +23.6° | 228 mm | 26 | +34.4° (2020) | +21.9° (2018) |
| Oktober | +30.5° | +23.8° | 252 mm | 28 | +35.2° (2022) | +21.9° (1967) |
| November | +30.4° | +23.9° | 247 mm | 28 | +34° (2021) | +22.3° (2018) |
| Desember | +30.1° | +24° | 268 mm | 29 | +34.2° (2025) | +22.2° (2022) |