Expand
Contents
- The climate of Cilaos
- The best time to visit Cilaos
- The worst time to visit Cilaos
- Spring Weather in Cilaos
- Summer Weather in Cilaos
- Autumn Weather in Cilaos
- Winter Weather in Cilaos
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Cilaos
Found nestled in the heart of Reunion, Cilaos enjoys a maritime west coast climate with warm summers, classified as Cfb in the Köppen climate classification. The town's yearly weather pattern reveals gentle, nearly consistent temperatures, running from 20.7°C (69.3°F) to 25.9°C (78.6°F).
Rainfall exhibits a more significant fluctuation, with monthly average precipitation ranging from a low of 19mm (0.75") in September to a high of 193mm (7.6") in January. Similarly, the number of rainy days follows this pattern, with the lightest falls occurring from September to November and a peak taking place in the month of January, where an average of 25.1 days of rainfall associates with this location.
Across the year, the daylight ranges from a low of 10.9 hours in June to a maximum of 13.4 hours in December. Corresponding with this, the average sunshine hours vary from a minimum of 6.7 hours during May, June, and July to a maximum of 10.5 hours in October. Furthermore, the UV index stays around the value of 5 throughout the year but elevates to 6 during some months.
One aspect that differentiates Cilaos is its cloud cover, which varies less than might be expected, staying between 24% and 41%. This results in adequate visibility of approximately 10 km throughout the year.
Rainfall exhibits a more significant fluctuation, with monthly average precipitation ranging from a low of 19mm (0.75") in September to a high of 193mm (7.6") in January. Similarly, the number of rainy days follows this pattern, with the lightest falls occurring from September to November and a peak taking place in the month of January, where an average of 25.1 days of rainfall associates with this location.
Across the year, the daylight ranges from a low of 10.9 hours in June to a maximum of 13.4 hours in December. Corresponding with this, the average sunshine hours vary from a minimum of 6.7 hours during May, June, and July to a maximum of 10.5 hours in October. Furthermore, the UV index stays around the value of 5 throughout the year but elevates to 6 during some months.
One aspect that differentiates Cilaos is its cloud cover, which varies less than might be expected, staying between 24% and 41%. This results in adequate visibility of approximately 10 km throughout the year.
The best time to visit Cilaos
The best time to visit Cilaos often depends on the type of activities the visitor is interested in. For those seeking warmth and sunshine, October presents the most favorable conditions. During this month, the average temperature is about 22.6°C (72.7°F), and the region experiences 10.5 hours of sunshine, which is the highest for the year, and an average rainfall of a mere 49mm (1.93"). Wind conditions are also favorable, with speeds averaging 14.3km/h (8.9mph).
The worst time to visit Cilaos
January is typically the least favorable month to visit Cilaos, owing to the high precipitation levels. Rainfall in January averages 193mm (7.6"), considerably higher than other times of the year. Additionally, this inflow of precipitation accompanies an average of 25.1 days of rainfall which implies incessant showers. The average temperature during this period is 25.8°C (78.4°F), with a high relative humidity level of 82%.
Spring Weather in Cilaos
Spring in Cilaos, which spans from September to November, brings mild temperatures and reduced precipitation. Average temperatures stay comfortably between 21.4°C (70.5°F) to 23.7°C (74.7°F), making this a time of pleasant, balanced weather. Rainfall during this period is minimal, ranging from 19mm (0.75") to 107mm (4.21"). The number of sunshine hours increases steadily from 9.1 hours in September to 10.3 hours in November.
Summer Weather in Cilaos
The summer months, from December to February, are characterized by warmer temperatures and higher levels of precipitation. Temperatures range from 25.3°C (77.5°F) to 25.9°C (78.6°F), but the increased rainfall, peaking at 193mm (7.6") in January, makes this a much wetter period than other parts of the year. Despite this, sunshine hours remain high, averaging about 10 hours per day.
Autumn Weather in Cilaos
Autumn in Cilaos, observed between March and May, sees average temperatures moderating from 25.7°C (78.3°F) in March to 23.1°C (73.6°F) in May. Rainfall decreases significantly through this period, from 159mm (6.26") in March to 66mm (2.6") in May. Despite the reducing sunlight hours, from 8.1 hours in March to 6.7 hours in May, the conditions during these months are fairly pleasant.
Winter Weather in Cilaos
The winter months of June to August are marked by cool temperatures and the least amount of rainfall for the whole year. Temperatures drop to a low of 20.7°C (69.3°F) in July but rebound to 20.9°C (69.6°F) in August. Rainfall bottoms out at 24mm (0.94") in August, the lowest in the year, and the number of sunshine hours considerably increases to 8.6 hours in August. Therefore, despite being winter, the weather conditions are reasonably pleasant for outdoor activities.
Weather in January
January in Cilaos, Reunion basks in warm temperatures, ranging from 23.3°C (73.9°F) to 25.8°C (78.4°F). A high humidity level of 82% contributes to January's atmospheric heaviness. Compared to February, January experiences a slightly warmer atmosphere, coupled with a higher volume of rain. Weather in January »
Weather in February
February's weather is marginally cooler than January with a slight reduction in rainfall, coming down to 139mm (5.47") from 193mm (7.6") in the previous month. Although slightly cooler, the weather conditions still maintain a tropical charm. Weather in February »
Weather in March
The arrival of March brings about a surge in rainfall, jumping to 159mm (6.26"). While the temperatures are more or less stationary with highs touching 25.7°C (78.3°F), the noticeable up-tick in the rain is what distinguishes March. Weather in March »
Weather in April
The weather in April takes a turn as temperatures slightly dip and reach a high of 24.8°C (76.6°F), and rainfall diminishes to 117mm (4.61"). April bears the signs of the transition from summer to fall, as the rainfall drastically reduces from the prior month. Weather in April »
Weather in May
In May, there's a noticeable downturn in temperatures and rainfall, reaching a low of 66mm (2.6") from 117mm (4.61") in April. With the increasing fall in temperatures, May marks an amicable retreat of the rainfall and the gradual onset of winter. Weather in May »
Weather in June
As June advances, winter announces itself with temperatures descending to a minimum of 19.1°C (66.4°F). A mere 40mm (1.57") rainfall characterizes June. Comparing it to July, June is cooler and experiences a greater quantum of rainfall. Weather in June »
Weather in July
July brings in the peak of winter with the lowest temperatures of the year and a further fall in the rainfall to 33mm (1.3"). It stands out as the coolest month of the year in Cilaos, with temperatures remarkably lower than those in August. Weather in July »
Weather in August
In August, the climate slightly heats up with a maximum temperature reaching the mark of 20.9°C (69.6°F). A visible fall in rainfall is marked; just 24mm (0.94") is observed during this month. While the turning temperatures and the reducing rainfall differentiate August from July, comparing it to September, August appears slightly cooler and with more rainfall. Weather in August »
Weather in September
September in Cilaos reassures the ascent of temperatures, with the mercury reaching an average high of 21.4°C (70.5°F). It experiences the year's minimum rainfall of just 19mm (0.75"). Stepping ahead from August, September brings a rise in temperature with a remarkable fall in precipitation. Weather in September »
Weather in October
October experiences a rise in temperatures and a considerable hike in rainfall touching 49mm (1.93"), from 19mm (0.75") in September. Despite the climbing temperatures, October is most recognized for its hike in rainfall. Contrastingly, when moving towards November, Cilaos climatic conditions showcase an abrupt increase in both maximum temperatures and the volume of rainfall. Cilaos sees the arrival of October with an average high-temperature of a still pleasant 22.6°C (72.7°F), indicating a subtle variation from September. Weather in October »
Weather in November
November, with a jump in rainfall to 107mm (4.21") and an increase in temperatures to 23.7°C (74.7°F), announces the onset of the summer season. Its tropical warmth and substantial rainfall set it apart from the slightly cooler and drier October. Weather in November »
Weather in December
December, the last month of the year, holds on to the warmth of the summer season with the temperature scale touching 25.3°C (77.5°F). A slight dip in rainfall to 81mm (3.19") marks the arrival of December. Comparing it to the preceding month, December brings reduced rainfall while holding onto the November warmth. Weather in December »
[Resources]Frequently asked questions
What is the wettest month in Cilaos?
January is the month with the most rainfall in Cilaos, Reunion. Rain falls for 25.1 days and accumulates 193mm (7.6") of precipitation.
How many days does it rain in Cilaos?
In Cilaos, Reunion, during the entire year, the rain falls for 252.8 days and collects up to 1027mm (40.43") of precipitation.
What are the months with the highest UV index in Cilaos?
The months with the highest UV index are January through March, May, October through December, with an average maximum UV index of 6.
What time of the year is the hottest in Cilaos?
February is the month when Cilaos sees the average highest temperatures, with a high of 25.9°C (78.6°F) and a low of 23.3°C (73.9°F).
What is the most humid month in Cilaos?
With an average relative humidity of 83%, March is the most humid month in Cilaos.
What are the months with the lowest UV index in Cilaos?
April, June through September, with an average maximum UV index of 5, are months with the lowest UV index in Cilaos.
What is the month with the least sunshine in Cilaos?
The months with the least sunshine in Cilaos, Reunion, are May through July, with an average of 6.7h of sunshine.
What is the month with the shortest days in Cilaos?
June has the shortest days of the year in Cilaos, with an average of 10h and 54min of daylight.
What is the coldest month in Cilaos?
Temperature readings reach their annual highs in July, averaging 20.7°C (69.3°F) and a minimum average of 18.1°C (64.6°F).
What is the least humid month in Cilaos?
The months with the lowest humidity in Cilaos are August and September, with an average relative humidity of 78%.
What is the driest month in Cilaos?
September is the month with the least rainfall in Cilaos, Reunion. Rain falls for 15.6 days and accumulates 19mm (0.75") of precipitation.
What month has the most sunshine in Cilaos?
October has the most sunshine of the year, with an average of 10.5h of sunshine.
When are the longest days in Cilaos?
December has the longest days of the year, with an average of 13h and 24min of daylight.
Is there Daylight Saving Time (DST) in Cilaos?
Cilaos, Reunion, does not observe Daylight Saving Time (DST). +04 timezone is used over the entire year.
Average temperature
Cilaos, Reunion
The warmest month (with the highest average high temperature) is February (25.9°C).
The month with the lowest average high temperature is July (20.7°C).
The months with the highest average low temperature are January, February and March (23.3°C).
The coldest month (with the lowest average low temperature) is August (17.8°C).
Average pressure
Cilaos, Reunion
- Average pressure in January:
1011.3mbar - Average pressure in February:
1011.1mbar - Average pressure in March:
1012.4mbar - Average pressure in April:
1014.7mbar - Average pressure in May:
1017.5mbar - Average pressure in June:
1019.8mbar
- Average pressure in July:
1020.8mbar - Average pressure in August:
1021.4mbar - Average pressure in September:
1020.9mbar - Average pressure in October:
1018.2mbar - Average pressure in November:
1015.7mbar - Average pressure in December:
1013.4mbar
The month with the highest atmospheric pressure is August (1021.4mbar).
The month with the lowest atmospheric pressure is February (1011.1mbar).
Average wind speed
Cilaos, Reunion
- Average wind speed in January:
14.8km/h - Average wind speed in February:
14.4km/h - Average wind speed in March:
15.5km/h - Average wind speed in April:
15.4km/h - Average wind speed in May:
15.5km/h - Average wind speed in June:
17.4km/h
- Average wind speed in July:
18.2km/h - Average wind speed in August:
17.4km/h - Average wind speed in September:
17.1km/h - Average wind speed in October:
14.3km/h - Average wind speed in November:
12.5km/h - Average wind speed in December:
12.5km/h
The windiest month (with the highest average wind speed) is July (18.2km/h).
The calmest months (with the lowest average wind speed) are November and December (12.5km/h).
Average humidity
Cilaos, Reunion
The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall
Cilaos, Reunion
- Average rainfall in January:
193mm - Average rainfall in February:
139mm - Average rainfall in March:
159mm - Average rainfall in April:
117mm - Average rainfall in May:
66mm - Average rainfall in June:
40mm
The wettest month (with the highest rainfall) is January (193mm).
The driest month (with the least rainfall) is September (19mm).
Average rainfall days
Cilaos, Reunion
- Average rainfall days in January:
25.1 days - Average rainfall days in February:
25.1 days - Average rainfall days in March:
26.2 days - Average rainfall days in April:
22.3 days - Average rainfall days in May:
20.3 days - Average rainfall days in June:
19.1 days
- Average rainfall days in July:
20.8 days - Average rainfall days in August:
19.8 days - Average rainfall days in September:
15.6 days - Average rainfall days in October:
16.6 days - Average rainfall days in November:
18.6 days - Average rainfall days in December:
23.3 days
The month with the highest number of rainy days is March (26.2 days).
The month with the least rainy days is September (15.6 days).
Average daylight / Average sunshine
Cilaos, Reunion
- Average daylight in January:
13h and 2min - Average daylight in February:
12h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
11h and 4min - Average daylight in May:
11h and 1min - Average daylight in June:
10h and 5min
- Average daylight in July:
11h and 0min - Average daylight in August:
11h and 2min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 4min - Average daylight in November:
13h and 1min - Average daylight in December:
13h and 2min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in January:
9h and 5min - Average sunshine in February:
8h and 1min - Average sunshine in March:
8h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
6h and 4min - Average sunshine in June:
6h and 4min
- Average sunshine in July:
6h and 4min - Average sunshine in August:
8h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
10h and 3min - Average sunshine in November:
10h and 2min - Average sunshine in December:
10h and 1min
The month with the most sunshine is October (Average sunshine: 10h and 30min).
The months with the least sunshine are May, June and July (Average sunshine: 6h and 42min).
Average sunshine days
Cilaos, Reunion
- Average sunshine days in January:
1.9 days - Average sunshine days in February:
1.1 days - Average sunshine days in March:
2.6 days - Average sunshine days in April:
3.6 days - Average sunshine days in May:
3.9 days - Average sunshine days in June:
3.6 days
- Average sunshine days in July:
3.7 days - Average sunshine days in August:
3.2 days - Average sunshine days in September:
4.3 days - Average sunshine days in October:
6.6 days - Average sunshine days in November:
5 days - Average sunshine days in December:
2.2 days
The month with the most sunshine days is October (6.6 days).
The month with the least sunshine days is February (1.1 days).
Average UV index
Cilaos, Reunion
The months with the highest UV index are January, February, March, May, October, November and December (UV index 6).
The months with the lowest UV index are April, June, July, August and September (UV index 5).
Average cloud cover
Cilaos, Reunion
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 24).
Average visibility
Cilaos, Reunion
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Cilaos, Reunion
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
