Geografi Sao Tome dan Principe
Iklim

Di permukaan laut, iklimnya tropis—panas dan lembab dengan suhu rata-rata tahunan sekitar 27 °C (80,6 °F) dan sedikit variasi harian. Pada ketinggian yang lebih tinggi, suhu rata-rata tahunan berada pada angka  20 °C (68 °F), dan kondisi suhu malam umumnya terasa sejuk. Curah hujan tahunan bervariasi dari 5.000 mm (196,9 in) di lereng barat daya hingga 1.000 mm (39,4 in) di dataran rendah bagian utara. Musim hujan berlangsung dari Oktober hingga Mei.
Antara tahun 1950 dan 2010, negara ini mengalami peningkatan suhu rata-rata tahunan sebesar 1,5 °C karena perubahan iklim.
| Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Bulan | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Jan | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Feb | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Mar | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Apr | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Mei | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Jun | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Jul | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Agt | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Sep | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Okt | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Nov | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Des | Data iklim São Tomé (Bandar Udara Internasional São Tomé)> Tahun |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Rekor tertinggi °C (°F) | 32.0  (89.6) | 33.6  (92.5) | 33.5  (92.3) | 33.4  (92.1) | 33.9  (93) | 31.0  (87.8) | 30.7  (87.3) | 31.0  (87.8) | 31.7  (89.1) | 31.5  (88.7) | 31.6  (88.9) | 32.0  (89.6) | 33.9  (93) |
| Rata-rata tertinggi °C (°F) | 29.4  (84.9) | 29.9  (85.8) | 30.2  (86.4) | 30.1  (86.2) | 29.3  (84.7) | 28.0  (82.4) | 27.3  (81.1) | 27.7  (81.9) | 28.6  (83.5) | 28.7  (83.7) | 29.0  (84.2) | 29.1  (84.4) | 28.9  (84) |
| Rata-rata harian °C (°F) | 25.9  (78.6) | 26.2  (79.2) | 26.4  (79.5) | 26.4  (79.5) | 26.0  (78.8) | 24.7  (76.5) | 23.8  (74.8) | 24.1  (75.4) | 25.0  (77) | 25.2  (77.4) | 25.5  (77.9) | 25.6  (78.1) | 25.4  (77.7) |
| Rata-rata terendah °C (°F) | 22.4  (72.3) | 22.5  (72.5) | 22.6  (72.7) | 22.6  (72.7) | 22.6  (72.7) | 21.4  (70.5) | 20.4  (68.7) | 20.5  (68.9) | 21.3  (70.3) | 21.8  (71.2) | 22.0  (71.6) | 22.1  (71.8) | 21.8  (71.2) |
| Rekor terendah °C (°F) | 19.1  (66.4) | 19.6  (67.3) | 19.2  (66.6) | 19.4  (66.9) | 18.5  (65.3) | 14.0  (57.2) | 14.0  (57.2) | 13.4  (56.1) | 16.0  (60.8) | 18.3  (64.9) | 18.8  (65.8) | 19.6  (67.3) | 13.4  (56.1) |
| Curah hujan mm (inci) | 81  (3.19) | 84  (3.31) | 131  (5.16) | 122  (4.8) | 113  (4.45) | 19  (0.75) | 0  (0) | 1  (0.04) | 17  (0.67) | 110  (4.33) | 99  (3.9) | 108  (4.25) | 885  (34.85) |
| Rata-rata hari hujan (≥ 0.1 mm) | 8 | 8 | 12 | 11 | 10 | 3 | 2 | 3 | 6 | 12 | 11 | 8 | 94 |
|  % kelembapan | 85 | 84 | 83 | 83 | 84 | 79 | 77 | 78 | 79 | 82 | 85 | 85 | 82 |
| Rata-rata sinar matahari bulanan | 142.6 | 135.6 | 139.5 | 126.0 | 145.7 | 165.0 | 161.2 | 148.8 | 120.0 | 114.7 | 135.0 | 142.6 | 1.676,7 |
| Rata-rata sinar matahari harian | 4.6 | 4.8 | 4.5 | 4.2 | 4.7 | 5.5 | 5.2 | 4.8 | 4.0 | 3.7 | 4.5 | 4.6 | 4.6 |
Sumber: Deutscher Wetterdienst
| Data iklim Santo Antonio> Bulan | Data iklim Santo Antonio> Jan | Data iklim Santo Antonio> Feb | Data iklim Santo Antonio> Mar | Data iklim Santo Antonio> Apr | Data iklim Santo Antonio> Mei | Data iklim Santo Antonio> Jun | Data iklim Santo Antonio> Jul | Data iklim Santo Antonio> Agt | Data iklim Santo Antonio> Sep | Data iklim Santo Antonio> Okt | Data iklim Santo Antonio> Nov | Data iklim Santo Antonio> Des | Data iklim Santo Antonio> Tahun |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Rata-rata tertinggi °C (°F) | 29.0  (84.2) | 29.6  (85.3) | 29.6  (85.3) | 29.4  (84.9) | 28.8  (83.8) | 27.6  (81.7) | 26.8  (80.2) | 27.1  (80.8) | 27.4  (81.3) | 27.5  (81.5) | 28.2  (82.8) | 28.6  (83.5) | 28.3  (82.9) |
| Rata-rata harian °C (°F) | 25.5  (77.9) | 24.8  (76.6) | 25.8  (78.4) | 25.8  (78.4) | 25.4  (77.7) | 24.2  (75.6) | 23.5  (74.3) | 23.8  (74.8) | 24.3  (75.7) | 24.4  (75.9) | 24.8  (76.6) | 25.2  (77.4) | 24.8  (76.6) |
| Rata-rata terendah °C (°F) | 22.0  (71.6) | 20.0  (68) | 22.0  (71.6) | 22.1  (71.8) | 21.9  (71.4) | 20.7  (69.3) | 20.2  (68.4) | 20.4  (68.7) | 21.2  (70.2) | 21.4  (70.5) | 21.4  (70.5) | 21.8  (71.2) | 21.2  (70.2) |
| Curah hujan mm (inci) | 113  (4.45) | 105  (4.13) | 186  (7.32) | 233  (9.17) | 229  (9.02) | 89  (3.5) | 21  (0.83) | 36  (1.42) | 146  (5.75) | 398  (15.67) | 174  (6.85) | 142  (5.59) | 1.872  (73,7) |
| Rata-rata hari hujan (≥ 0.1 mm) | 14 | 11 | 16 | 18 | 18 | 7 | 14 | 12 | 21 | 25 | 18 | 14 | 188 |
|  % kelembapan | 88 | 86 | 86 | 87 | 88 | 83 | 83 | 83 | 86 | 89 | 88 | 87 | 86 |
Sumber: Deutscher Wetterdienst