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Monthly climate in Riaba, Equatorial Guinea

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Riaba features a tropical monsoon climate (Am). Temperatures typically range between 23 °C (73 °F) and 25 °C (78 °F) through the year, but rarely can drop to 20 °C (68 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 5266 mm (207.3 inches) and receives 343 rainy days on the 1 mm (0.04 inches) threshold annually. Riaba enjoys an average of 3364 hours of sunshine throughout the year, and daylight varies from 11 hours 55 minutes to 12 hours 17 minutes per day.

Monthly average temperatures in Riaba, Equatorial Guinea

The warmest months in Riaba are February, March and April, with daily mean temperatures ranging from 25 to 25 °C (78 - 78 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 23 to 23 °C (73 - 74 °F) throughout the day. On average each year, Riaba experiences 297 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 Riaba. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		31°C
(88°F)		30°C
(86°F)		29°C
(85°F)		28°C
(83°F)		28°C
(82°F)		29°C
(85°F)		29°C
(84°F)		29°C
(85°F)		29°C
(85°F)
Mean maximum29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(84°F)		28°C
(82°F)		27°C
(81°F)		28°C
(83°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)
Average high28°C
(82°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		27°C
(80°F)		25°C
(78°F)		25°C
(77°F)		26°C
(79°F)		27°C
(81°F)		27°C
(82°F)		28°C
(82°F)
Daily mean25°C
(77°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)		24°C
(75°F)		23°C
(74°F)		23°C
(73°F)		23°C
(74°F)		24°C
(75°F)		24°C
(76°F)		25°C
(77°F)
Average low23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		22°C
(71°F)		21°C
(71°F)		22°C
(71°F)		22°C
(72°F)		22°C
(73°F)		23°C
(73°F)
Mean minimum21°C
(70°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		21°C
(71°F)		21°C
(70°F)		21°C
(69°F)		21°C
(70°F)		21°C
(71°F)		21°C
(71°F)		21°C
(71°F)
Minimum20°C
(68°F)		21°C
(70°F)		21°C
(70°F)		22°C
(71°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		20°C
(69°F)		21°C
(70°F)		21°C
(71°F)		21°C
(70°F)		21°C
(70°F)

Compare climate in Riaba with other places

Compare temperature, precipitation, sunshine, UV index in Riaba, Equatorial Guinea with other places around the world.

Monthly average precipitation in Riaba, Equatorial Guinea

Riaba usually has the most precipitation in July, August and September, with an average of 30 rainy days and 715 mm (28.1 inches) of precipitation per month. The driest months in Riaba are January, February and December. On average, 141 mm (5.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riaba. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)101 (4.0)164 (6.4)339 (13.3)351 (13.8)526 (20.7)569 (22.4)646 (25.4)781 (30.7)717 (28.2)567 (22.3)347 (13.7)160 (6.3)
Average precipitation days (≥ 1 mm)232430283029313030312928

Monthly sunshine hours in Riaba, Equatorial Guinea

The sunniest months in Riaba are March, October and December, when the sun shines an average of 9 hours 30 minutes a day. Least sunny months in Riaba: January, August and September receive an average of 8 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riaba. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours256277287283284276283271259286286310
Mean daily daylight hours11h 56m11h 59m12h 5m12h 10m12h 15m12h 17m12h 16m12h 12m12h 6m12h 1m11h 57m11h 55m

Solar UV radiation in Riaba, Equatorial Guinea

Riaba 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 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 Riaba UV Index data.

Average daily maximum UV levels by month for Riaba. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)111112141311111213131110