Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Santo Tomas de Arriba features a hot semi-arid climate (BSh). Temperatures typically range between 18 °C (64 °F) and 23 °C (74 °F) through the year, but rarely can drop to 3 °C (38 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 965 mm (38.0 inches) and receives 121 rainy days on the 1 mm (0.04 inches) threshold annually. Santo Tomas de Arriba enjoys an average of 3528 hours of sunshine throughout the year, and daylight varies from 11 hours 8 minutes to 13 hours 5 minutes per day.
The warmest months in Santo Tomas de Arriba are April, May and June, with daily mean temperatures ranging from 21 to 23 °C (70 - 74 °F) throughout the day. The coldest temperatures usually occur in January, November and December, when daily mean temperatures range from 18 to 18 °C (64 - 66 °F) throughout the day. On average each year, Santo Tomas de Arriba experiences 275 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 33°C (91°F) |
36°C (96°F) |
35°C (96°F) |
37°C (99°F) |
36°C (98°F) |
34°C (94°F) |
32°C (90°F) |
31°C (88°F) |
31°C (88°F) |
32°C (89°F) |
32°C (90°F) |
31°C (89°F) |
| Mean maximum | 31°C (88°F) |
33°C (92°F) |
34°C (94°F) |
35°C (96°F) |
35°C (95°F) |
30°C (87°F) |
30°C (86°F) |
30°C (86°F) |
30°C (86°F) |
30°C (87°F) |
30°C (87°F) |
30°C (86°F) |
| Average high | 26°C (79°F) |
28°C (83°F) |
30°C (86°F) |
31°C (88°F) |
31°C (88°F) |
27°C (81°F) |
28°C (82°F) |
27°C (81°F) |
27°C (81°F) |
26°C (80°F) |
26°C (79°F) |
26°C (79°F) |
| Daily mean | 18°C (64°F) |
19°C (67°F) |
21°C (69°F) |
22°C (73°F) |
23°C (74°F) |
21°C (70°F) |
21°C (70°F) |
21°C (69°F) |
21°C (69°F) |
20°C (68°F) |
18°C (66°F) |
18°C (64°F) |
| Average low | 11°C (52°F) |
11°C (53°F) |
13°C (55°F) |
15°C (58°F) |
16°C (61°F) |
16°C (61°F) |
15°C (60°F) |
15°C (60°F) |
16°C (61°F) |
15°C (59°F) |
12°C (54°F) |
10°C (51°F) |
| Mean minimum | 6°C (43°F) |
6°C (44°F) |
8°C (47°F) |
10°C (51°F) |
13°C (55°F) |
14°C (57°F) |
12°C (55°F) |
13°C (56°F) |
13°C (56°F) |
11°C (52°F) |
8°C (47°F) |
5°C (42°F) |
| Minimum | 5°C (41°F) |
3°C (39°F) |
7°C (44°F) |
8°C (47°F) |
10°C (50°F) |
12°C (54°F) |
11°C (53°F) |
12°C (55°F) |
12°C (54°F) |
8°C (47°F) |
7°C (44°F) |
3°C (38°F) |
Compare temperature, precipitation, sunshine, UV index in Santo Tomas de Arriba, Oaxaca, Mexico with other places around the world.
Santo Tomas de Arriba usually has the most precipitation in June, August and September, with an average of 22 rainy days and 203 mm (8.0 inches) of precipitation per month. The driest months in Santo Tomas de Arriba are January, February and March. On average, 3 mm (0.1 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 3 (0.1) | 3 (0.1) | 4 (0.2) | 19 (0.8) | 61 (2.4) | 225 (8.9) | 106 (4.2) | 176 (6.9) | 207 (8.2) | 140 (5.5) | 15 (0.6) | 4 (0.2) |
| Average precipitation days (≥ 1 mm) | 0 | 0 | 1 | 4 | 12 | 20 | 20 | 24 | 23 | 15 | 2 | 0 |
The sunniest months in Santo Tomas de Arriba are March, May and July, when the sun shines an average of 10 hours 16 minutes a day. Least sunny months in Santo Tomas de Arriba: January, June and September receive an average of 8 hours 40 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 243 | 279 | 319 | 317 | 317 | 267 | 318 | 299 | 278 | 288 | 298 | 301 |
| Mean daily daylight hours | 11h 14m | 11h 35m | 12h 2m | 12h 30m | 12h 54m | 13h 5m | 12h 59m | 12h 38m | 12h 11m | 11h 43m | 11h 20m | 11h 8m |
Santo Tomas de Arriba experiences the highest level of ultraviolet (UV) radiation in April, May and July, when the maximum UV index can reach values of 15 - 15, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Santo Tomas de Arriba UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 10 | 13 | 14 | 15 | 15 | 14 | 15 | 14 | 14 | 13 | 11 | 9 |
Discover in-depth weather details for every month in Santo Tomas de Arriba. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Santo Tomas de Arriba's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.