Brazzaville weather in May

May in Brazzaville: sweltering, a little rain, with poor air quality — fine if you can take 38°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Brazzaville🇨🇬 Congo · Central Africa · City67
  1. 65Jan
  2. 63Feb
  3. 61Mar
  4. 58Apr
  5. 67May
  6. 78Jun
  7. 82Jul
  8. 80Aug
  9. 75Sep
  10. 65Oct
  11. 55Nov
  12. 59Dec

#5 of 12 months in Brazzaville · #1070 of 1413 destinations to visit in May · comfort 67/100 (tier C)

Days
32°C
Nights
23°C
Wet days
12
Sun
9.4 h
Humidity
83%
Daylight
12 h
Brazzaville, Congo
Photo: Africany · CC0

Traveller notes on Brazzaville in May

Other months in Brazzaville

Detailed month-specific weather trip reports for Brazzaville are essentially absent from the forum, with most discussion instead focused on visa requirements, vaccinations against hepatitis, typhoid and yellow fever, and malaria precautions rather than granular climate detail. Given the limited destination-specific weather coverage, this note is grounded in the well-established regional pattern for this part of equatorial Central Africa: January sits within the warmer, wetter half of the year here, with consistently hot, humid conditions and frequent rain typical of the Congo Basin's tropical climate. Posters generally emphasize health precautions - vaccinations and malaria prevention - as the more pressing planning concern for a Brazzaville visit than the specific month chosen.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗
Forum posters confirm July sits within the Congo Basin's dry season (roughly June through September), a period locals and regular visitors describe as the easier, more reliable window for travel around Brazzaville compared to the wetter months. Posters report positive July experiences here, including a multi-day safari-style trip into the wider Congo region praised as a highlight of their visit. The dry season's near-total lack of rain does come with real heat and humidity by afternoon, a genuine tropical Congo Basin climate rather than an arid one, so posters generally recommend light, breathable clothing alongside sun protection for a July visit despite the dry-season framing.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

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Brazzaville climate normals — May

Daytime high32°C / 90°F🔥 sweltering
Nighttime low23°C / 74°F
Feels like (high)38°C / 100°F
Rainfall67 mm / 2.6 in🌦 some rain
Rainy days12 days
Humidity83%💦 very humid
Dew point23°C / 73°F
Sunshine9.4 h/day
Daylight11.9 h
Wind8 km/h / 5 mph
Air quality (US AQI)110😷 poor

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Brazzaville in May

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonschool holidays in 3 of the markets that fill it, an ordinary month(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Brazzaville's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherBrazzaville's weather peaks June–August, best around July.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Brazzaville in May

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Storm flooding and gullies

    15 Feb – 15 May · usuallyFlood season

    The heaviest downpours of the long rainy season swamp low streets and cut erosion gullies through the northern districts; drainage is undersized, so a single storm can leave roads impassable. Source ↗

What's on around the world in May →

Where is Brazzaville?

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Brazzaville in May — FAQ

Is May a good time to visit Brazzaville?
May in Brazzaville: sweltering, a little rain, with poor air quality — fine if you can take 38°C afternoons. It ranks #5 of 12 months for Brazzaville on SeasonMap's comfort score (67/100).
What is the weather like in Brazzaville in May?
In May, Brazzaville averages a daily high of 32.4°C and a low of 23.3°C, with about 67 mm of rain over roughly 12.3 rainy days.
What is the air quality in Brazzaville in May?
Brazzaville has a mean US Air Quality Index of about 110 in May.