Port Louis (Mauritius) weather in December

December in Port Louis: hot, rainy, with clean air — fine if you can take 21 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Port Louis🇲🇺 Mauritius · Indian Ocean Islands · Island84
  1. 77Jan
  2. 76Feb
  3. 79Mar
  4. 82Apr
  5. 86May
  6. 87Jun
  7. 87Jul
  8. 90Aug
  9. 91Sep
  10. 92Oct
  11. 89Nov
  12. 84Dec

#8 of 12 months in Port Louis · #349 of 1413 destinations to visit in December · comfort 84/100 (tier A)

Days
29°C
Nights
25°C
Wet days
21
Sun
12 h
Humidity
76%
Daylight
13 h
Port Louis, Mauritius
Photo: Chen EdisoN · Pexels

Traveller notes on Port Louis in December

Other months in Port Louis

Regulars are specific this counts as one of the best months to visit, genuinely good anywhere on the island, real heavy rain not expected to arrive until around mid-December even though some rain does fall this month itself. Our row backs that hot, genuinely wet read, 28.3C reading as a hot 31C, over 23.4C nights feeling 25C, with 66.1mm of rain across 14.9 days and humidity at 74 percent. Regulars are consistent cyclone season doesn't properly start until December, running through April, so this month reads as genuinely safe on that front, any rain that does fall typically brief rather than a settled wet day. The sea sits at a warm, swimmable 26.8C. The record: 11.9 hours of sun, a 22.8 kph wind and AQI 29.
BestMonthRealRainWaitsForDecember · November · 1 month ago · Read more on Tripadvisor ↗
August is winter here and the regulars' advice is about which side of the island you book. The south-easterly trades blow hard through July and August and do not ease until well into September; on the east and south coasts they can take the beach away from you altogether, which is why the boards point people to the north and west. Our row sits on the sheltered side at 24.9C by day over 20.5C nights, and even here the wind averages 28.6 kph. Rain looks frequent at 11.5 days but totals 38.3mm, three millimetres a time. The sea holds 24.8C. Their east-coast figure runs a degree or two under ours, which is the wind rather than the thermometer. The record: humidity 72 percent, 10.4 hours of sun and AQI 39.
PickTheLeewardCoast · August · 1 month ago · Read more on Tripadvisor ↗
September is the turn of the Mauritian year - winter runs April to September, summer October to March - so the month starts in one and ends in the other. The forum's practical version: high 20s C, occasional cloud and showers, a sea around 23C, and less chance of rain than most months. The variable is wind. The winter trades are still blowing early in September, strongest on the east and south coasts, and they ease towards the end of the month and further into October. If wind matters to your trip, regulars say pick the west or north, which are sheltered, and the later half of the month over the earlier. The record: 25.7C days, 20.8C nights, 12.3 precipitation days but only 30.3mm, a 24.8C sea and a 28 kph wind.
WestSideIfWindy · September · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe April daytime temperatures typically in the high-70s to low-80sF (roughly 27-29C), still hot and humid early in the month with conditions gradually easing toward late April. Posters are consistent that rain remains a real, frequent feature - easily half the month's days seeing some rain, most often a short shower overnight or in the evening rather than an all-day washout, though a handful of visitors have reported heavier downpours causing localized flooding around Port Louis itself. Posters generally rate late April into early May as noticeably more pleasant than early April, with warm temperatures holding while the heaviest mid-summer rain eases off.
Tripadvisor community · April · 1 month ago · Read more on Tripadvisor ↗

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Port Louis climate normals — December

Daytime high29°C / 85°F🥵 hot
Nighttime low25°C / 76°F
Feels like (high)33°C / 91°F
Sea temperature27°C / 81°F😎 warm sea
Rainfall117 mm / 4.6 in🌧 rainy
Rainy days21 days
Humidity76%💦 very humid
Dew point22°C / 72°F
Sunshine12 h/day
Daylight13.3 h
Wind24 km/h / 15 mph
Air quality (US AQI)25🍃 good

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

Crowds in Port Louis in December

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 5 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Port Louis'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 weatherPort Louis's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in Port Louis in December

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

  • Hazard

    Cyclone season

    15 Nov – 15 May · usually

    The Mauritius Meteorological Services run their warning classes from mid-November to mid-May. A class III shuts the capital — offices, buses, the market — usually for a day or two, and January to March is the likeliest stretch. Source ↗

What's on around the world in December →

Nearby, and something's on

Within 300 km of Port Louis — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Port Louis?

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Port Louis in December — FAQ

Is December a good time to visit Port Louis?
December in Port Louis: hot, rainy, with clean air — fine if you can take 21 rainy days. It ranks #8 of 12 months for Port Louis on SeasonMap's comfort score (84/100).
What is the weather like in Port Louis in December?
In December, Port Louis averages a daily high of 29.3°C and a low of 24.7°C, with about 117.3 mm of rain over roughly 20.9 rainy days.
What is the air quality in Port Louis in December?
Port Louis has a mean US Air Quality Index of about 25 in December.

Within 300 km: Grand Baie's Festive season peak around 15 Dec – 10 Jan.