Suhu rata-rata tahunan di Tanah Merah adalah +26.1°. Bulan terpanas adalah Mei (rata-rata siang +30.9°), dan terdingin November (rata-rata malam +21.9°). Chove cerca de 3971 mm por ano, com pico em November (458 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 | +29.5° | +21.9° | 255 mm | 27 | +35.2° (2005) | +15.5° (2017) |
| Februari | +30.3° | +22° | 200 mm | 23 | +40° (1979) | +16° (2019) |
| Maret | +30.7° | +22.3° | 256 mm | 26 | +38.4° (1980) | +16.5° (2021) |
| April | +30.7° | +22.6° | 306 mm | 28 | +37.4° (1999) | +17.8° (2018) |
| Mei | +30.9° | +22.6° | 352 mm | 29 | +36.9° (2016) | +17.9° (2023) |
| Juni | +30.8° | +22.4° | 278 mm | 27 | +36.1° (1962) | +16.9° (2023) |
| Juli | +30.5° | +21.9° | 293 mm | 28 | +37.4° (1990) | +17° (2018) |
| Agustus | +30.3° | +21.9° | 342 mm | 29 | +40.1° (1994) | +16.4° (2018) |
| September | +30° | +21.9° | 406 mm | 29 | +38.4° (2002) | +17.6° (2017) |
| Oktober | +29.7° | +21.9° | 449 mm | 30 | +42.8° (1994) | +16.8° (2024) |
| November | +29.2° | +21.9° | 458 mm | 29 | +35° (1962) | +17.4° (1975) |
| Desember | +29.1° | +21.9° | 377 mm | 29 | +36.3° (1988) | +17.4° (1991) |