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The driest places in South America in September

Riyadh tops the list at 0 mm in September. Ranked from 1991–2020 climate normals across 50 destinations.

# Destination Country Rainfall Avg high Rainfall
1 Riyadh Saudi Arabia 0 mm 39 °C 0 mm
2 Al Kharj Saudi Arabia 0.00 mm 40 °C 0 mm
3 Dammam Saudi Arabia 0.02 mm 38 °C 0 mm
4 Hafar Al-Batin Saudi Arabia 0.03 mm 40 °C 0 mm
5 Yanbu Saudi Arabia 0.05 mm 36 °C 0 mm
6 Unaizah Saudi Arabia 0.05 mm 39 °C 0 mm
7 Buraydah Saudi Arabia 0.05 mm 40 °C 0 mm
8 Tabuk Saudi Arabia 0.06 mm 36 °C 0 mm
9 Al Jubayl Saudi Arabia 0.08 mm 39 °C 0 mm
10 Jeddah Saudi Arabia 0.09 mm 35 °C 0 mm
11 Ica Peru 0.1 mm 27 °C 0 mm
12 Al Hufūf Saudi Arabia 0.1 mm 41 °C 0 mm
13 Ha'il Saudi Arabia 0.1 mm 37 °C 0 mm
14 Madinah Saudi Arabia 0.2 mm 41 °C 0 mm
15 Chincha Alta Peru 0.2 mm 22 °C 0 mm
16 Najrān Saudi Arabia 0.4 mm 34 °C 0 mm
17 Calama Chile 0.5 mm 23 °C 0 mm
18 Antofagasta Chile 0.8 mm 20 °C 1 mm
19 Chiclayo Peru 1.0 mm 23 °C 1 mm
20 Mossoró Brazil 1.1 mm 35 °C 1 mm
21 Chimbote Peru 1.4 mm 20 °C 1 mm
22 Petrolina Brazil 1.4 mm 32 °C 1 mm
23 Sullana Peru 1.4 mm 29 °C 1 mm
24 Parnaíba Brazil 1.5 mm 34 °C 2 mm
25 Sobral Brazil 1.5 mm 35 °C 2 mm
26 Lima Peru 1.6 mm 21 °C 2 mm
27 Callao Peru 1.6 mm 20 °C 2 mm
28 Santa Anita - Los Ficus Peru 1.8 mm 19 °C 2 mm
29 Piura Peru 1.9 mm 28 °C 2 mm
30 Trujillo Peru 2.2 mm 22 °C 2 mm
31 Juazeiro do Norte Brazil 2.2 mm 33 °C 2 mm
32 Tacna Peru 2.4 mm 20 °C 2 mm
33 Caucaia Brazil 2.8 mm 31 °C 3 mm
34 Arequipa Peru 3.2 mm 23 °C 3 mm
35 Teresina Brazil 3.8 mm 36 °C 4 mm
36 Makkah Saudi Arabia 4.6 mm 39 °C 5 mm
37 Maracanaú Brazil 4.7 mm 32 °C 5 mm
38 Iquique Chile 5.2 mm 22 °C 5 mm
39 Coquimbo Chile 5.5 mm 19 °C 6 mm
40 La Serena Chile 5.6 mm 20 °C 6 mm
41 Caxias Brazil 5.6 mm 36 °C 6 mm
42 Barreiras Brazil 7.8 mm 34 °C 8 mm
43 Manta Ecuador 8.4 mm 27 °C 8 mm
44 Imperatriz Brazil 10 mm 35 °C 10 mm
45 Montes Claros Brazil 11 mm 30 °C 11 mm
46 São José de Ribamar Brazil 12 mm 30 °C 12 mm
47 Ta’if Saudi Arabia 12 mm 32 °C 12 mm
48 Arica Chile 13 mm 18 °C 13 mm
49 São Luís Brazil 13 mm 31 °C 13 mm
50 Vitória da Conquista Brazil 14 mm 26 °C 14 mm

Only destinations with a published page for that month are ranked. The ranking is ours; the underlying values are reproduced from the source.

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: ranking order, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.