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Monthly climate in Sao Tome, Sao Tome and Principe

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sao Tome features a tropical savanna climate (As).Temperatures typically range between 24 °C (76 °F) and 27 °C (81 °F) through the year, but rarely can drop to 22 °C (73 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 1513 mm (59.5 inches) and receives 202 rainy days on the 1 mm (0.04 inches) threshold annually.Sao Tome enjoys an average of 3315 hours of sunshine throughout the year, and daylight varies from 12 hours 5 minutes to 12 hours 7 minutes per day.

Monthly average temperatures in Sao Tome, Sao Tome and Principe §

The warmest months in Sao Tome are February, March and April, with daily mean temperatures ranging from 27 to 27 °C (81 - 81 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 24 to 25 °C (76 - 77 °F) throughout the day. On average each year, Sao Tome experiences 291 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sao Tome, Sao Tome and Principe.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(84°F)		 29°C
(84°F)		 27°C
(81°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)
Mean maximum 28°C
(83°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)		 27°C
(80°F)		 26°C
(78°F)		 26°C
(78°F)		 26°C
(79°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)
Average high 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 27°C
(81°F)		 26°C
(79°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)
Daily mean 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(80°F)		 25°C
(78°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)
Average low 26°C
(79°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 25°C
(77°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)
Mean minimum 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 24°C
(76°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 25°C
(77°F)
Minimum 24°C
(76°F)		 25°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 23°C
(74°F)		 22°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)

Compare climate in Sao Tome with other places

Compare temperature, precipitation, sunshine, UV index in Sao Tome, Sao Tome and Principe with other places around the world.

Monthly average precipitation in Sao Tome, Sao Tome and Principe §

Sao Tome usually has the most precipitation in October, November and December, with an average of 26 rainy days and 219 mm (8.6 inches) of precipitation per month.The driest months in Sao Tome are June, July and August. On average, 27 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sao Tome, Sao Tome and Principe.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 129 (5.1) 130 (5.1) 148 (5.8) 158 (6.2) 154 (6.1) 39 (1.5) 17 (0.7) 26 (1.0) 53 (2.1) 171 (6.7) 229 (9.0) 257 (10.1)
Average precipitation days (≥ 1 mm) 21 19 20 17 20 7 3 6 9 25 27 28

Monthly sunshine hours in Sao Tome, Sao Tome and Principe §

The sunniest months in Sao Tome are August, September and December, when the sun shines an average of 9 hours 31 minutes a day.Least sunny months in Sao Tome: January, February and November receive an average of 8 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sao Tome, Sao Tome and Principe.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 250 259 278 268 272 277 289 291 294 274 268 290
Mean daily daylight hours 12h 5m 12h 5m 12h 5m 12h 6m 12h 7m 12h 7m 12h 7m 12h 6m 12h 6m 12h 5m 12h 5m 12h 5m

Solar UV radiation in Sao Tome, Sao Tome and Principe §

Sao Tome experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.June, July and August 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 Sao Tome UV Index data.

Average daily maximum UV levels by month for Sao Tome, Sao Tome and Principe.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 12 13 13 14 13 10 10 11 13 13 13 12