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Mauritius Rainfall - Rainfall in Mauritius

It is important to know that in Mauritius it can rain in one area while only a few kilometers away the sun is shining and no cloud is in sight.

If you wake up in the morning with gray sky, don’t worry. Go for a shower, have a breakfast and probably by then, the sky will be clear blue.

Rain occurs in all months but the wettest period in Mauritius is from December to April. During these months tropical cyclones occasionally strike the island or pass near enough to give very heavy rainfall and strong winds.

Mauritius Rainfall

Rainfall in Mauritius - additional information:

  • Rainfall varies considerably from region to region and throughout the year.
  • The annual rainfall which is about 1100mm on the North coast of Mauritius increases drastically on the Central Plateau.
  • The distribution during the year is quite uneven with a marked wet period during the summer months and relatively dry period from June to November. This is also reflected in the number of days of rainfall which for the North varies from 7 days a month during the wettest month to around 1 day a month during October and November.
  • Long term mean annual rainfall (1904-2007) over the Island is 2100 mm. The wettest months are February and March. The driest month is October.
  • Mean summer rainfall (1904-2007) is 1409 mm, which is 67% of the annual amount over the Island. Mean winter rainfall (1904-2007) is 695 mm. Although there is no marked rainy season, most of the rainfall occurs in summer months.
Mauritius Climate Chart Tempratures

Long-term time series of rainfall amount over the past century (1905 to 2007) show a decreasing trend in annual rainfall over Mauritius.

In fact the average rate of decrease per decade is around 57 mm. The total decrease during the last ten years is about 8% when compared to the 1950s.

Annual rainfall over the outer islands indicate significant variation from year to year but long-term analysis do show decreasing rainfall trend, though lesser than the main island Mauritius.

Rainfall Records:

The rainfall is measured at about 250 stations in Mauritius and 15 stations in Rodrigues. There is one rainfall station in Agalega and one in St Brandon. These stations are maintained by Government Departments, sugar estates, other authorities and a few volunteers. Duration of bright sunshine is recorded at 21 stations in Mauritius, 1 in Agalega and 1 in Rodrigues.

Mauritius Rainfall Figures:

  WEST REGION NORTH REGION EAST REGION
Month Average Rainfall in mm No. of Days with Rainfall > 5mm Average Rainfall in mm No. of Days with Rainfall > 5mm Average Rainfall in mm No. of Days with Rainfall > 5mm
January 153.2 8 206.2 8 261.3 9
February 181.8 10 239.9 9 334.1 10
March 86.2 6 158.9 7 231.2 9
April 87.6 6 157.6 6 240 9
May 42.7 3 99.2 5 167.7 8
June 29 2 68.1 4 104 7
July 15.4 1 72.9 5 102.5 6
August 14.8 1 75.1 4 104.9 6
September 12.5 1 46 2 70.1 4
October 16.5 1 47.9 2 62.2 3
November 25.7 2 49.5 2 82 4
December 115.6 6 127.5 5 201.8 7
  WEST REGION NORTH REGION
Month Average Rainfall in mm No. of Days with Rainfall > 5mm Average Rainfall in mm No. of Days with Rainfall > 5mm
January 236.6 8 291.6 9
February 266.6 10 400.2 12
March 203.1 8 246.6 9
April 211.5 8 209.9 9
May 153.4 6 120.3 6
June 95.2 5 96.1 6
July 100.2 5 114 7
August 87.9 5 119.4 7
September 59.6 3 72.7 4
October 60.1 3 62.9 4
November 76.9 4 64.7 4
December 171.8 6 197.1 6

NORTH

MONTH TEMPERATURE HUMIDITY AVERAGE RAINFALL SUNSHINE SEA TEMPERATURE
  Maximum Minimum % in mm Hrs per day degC
January 35.0 22.1 81 206 8.0 27.0
February 35.2 22.2 83 240 7.6 27.0
March 34.0 21.7 82 159 7.5 27.6
April 33.6 20.8 82 158 7.4 26.4
May 32.0 18.6 82 99 7.3 25.4
June 30.0 16.7 82 68 7.2 25.2
July 29.0 16.8 81 73 7.2 24.2
August 28.8 16.2 79 75 7.1 23.8
September 29.0 16.6 77 46 7.4 23.6
October 30.5 17.7 76 48 8.1 24.3
November 32.0 19.1 76 50 8.6 25.4
December 34.5 20.9 79 128 8.2 26.6

SOUTH

MONTH TEMPERATURE HUMIDITY AVERAGE RAINFALL SUNSHINE SEA TEMPERATURE
  Maximum Minimum % in mm Hrs per day degC
January 29.9 23.0 81 237 7.7 26.7
February 29.5 23.1 83 267 7.0 27.5
March 29.1 22.7 83 203 6.9 27.6
April 28.2 21.8 83 211 6.5 26.9
May 26.8 20.2 81 153 6.5 25.9
June 25.2 18.7 78 95 6.1 24.7
July 24.2 18.1 77 100 5.5 23.8
August 24.2 17.8 78 88 5.9 23.2
September 25.5 18.0 77 60 6.7 23.2
October 26.2 19.2 78 60 7.6 23.8
November 28.5 20.4 78 77 8.8 25.0
December 29.6 21.9 80 172 8.4 26.4
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