Climate and monthly weather forecastSaint-Pierre, Reunion
Climate and monthly weather forecast
The climate of Saint-Pierre
The island town of Saint-Pierre bears a köppen climate classification of Cfb, denoting a marine west coast environment with warm summers. Situated in the southwestern part of the Reunion Island, the community exists under a tropical marine influence that shapes its climate.Throughout the year, the temperature in Saint-Pierre varies, showing a mildly warm pattern. The monthly average high temperature ranges from 21.3°C (70.3°F) in the coldest month of July to a high of 26.3°C (79.3°F) in the warmest months between January and March. On the other hand, the average low temperature fluctuates from 18.8°C (65.8°F) to 24.3°C (75.7°F) in the same corresponding months. The sea temperature also experiences fluctuations similar to the ambient conditions, varying from 23.7°C (74.7°F) to 28.4°C (83.1°F) between September and March.
Saint-Pierre undergoes a humid tropical climate with the relative humidity hovering around the high 70s to the low 80s percentile across all months. Rainfall in the area is substantial, with monthly averages ranging from 10mm (0.39") in September to a peak of 162mm (6.38") in January. The number of rainfall days echoes this precipitation gradient, ranging from 9.5 days in September to 24.9 days in March.
The birthday island, despite its high humidity and rainfall patterns, enjoys a fair share of sunshine. From 6.9 hours per day of sunshine in May, it rises to 10.9 hours in October.
Wind conditions in Saint-Pierre offer a varying pattern, with nominal wind speeds ranging from 13.4km/h (8.3mph) to 19.8km/h (12.3mph) from November to July. Gusts can reach a high of 26.2km/h (16.3mph) in July.
The best time to visit Saint-Pierre
The optimal time to visit Saint-Pierre is between June and October, the dry season. Rainfall is comparatively less, at 21mm (0.83") in June and 34mm (1.34") in October. The average number of sunshine hours per day also peaks during these times, reaching 10.9 hours per day in October, making it a desirable period for outdoor activities.The worst time to visit Saint-Pierre
The least favorable time for a visit to Saint-Pierre would be between January and March. During this high rainfall season - upwards of 110mm (4.33") to a maximum 162mm (6.38") - the area experiences its highest humidity levels and a decreased number of sunshine hours.Spring weather in Saint-Pierre
Saint-Pierre's spring season that spans from September to November, enjoys a comfortable temperature range of 21.7°C (71.1°F) to 24.3°C (75.7°F) while the sea temperature varies from 23.7°C (74.7°F) in September to 25.3°C (77.5°F) in November. The rainfall in these months dips to the annual low, making it an excellent time to engage in outdoor activities.Summer weather in Saint-Pierre
Summers in Saint-Pierre, from December to February, experience the highest rainfall with a maximum average precipitation of 162mm (6.38") in January. The summer months carry an average minimum temperature of 24.3°C (75.7°F) to a maximum of 26.3°C (79.3°F) with the sea temperature warming up to 28.4°C (83.1°F).Autumn weather in Saint-Pierre
Autumn, from March to May, sees a reduction in rainfall from 119mm (4.69") in March to 44mm (1.73") by May. The temperatures during this season vary from a low of 19.5°C (67.1°F) to a high of 25.3°C (77.5°F). Sea temperatures begin to cool and range from 27.6°C (81.7°F) to 26.4°C (79.5°F) between March and May.Winter weather in Saint-Pierre
Winter in Saint Pierre is from June to August, with temperatures dropping to a yearly low of 18.8°C (65.8°F) in July. The sea temperatures correspondingly cool down to 23.8°C (74.8°F) by August. Despite the cooler temperatures, winters bring in a pleasant surprise with the lowest average rainfall of the year, ensuring less precipitation interference with your outdoor plans.Weather in January
January in Saint-Pierre, Reunion, is generally characterized by warm temperatures with occasional rainfall. The weather is quite humid, with a higher chance of experiencing overcast days. Compared to the previous month of December, January sees a slight decrease in its average high and low temperatures, as well as daylight hours. Weather in January »Weather in February
Saint-Pierre's weather remains steady in February, showing only minor variations compared to January. Cloud coverage increases marginally, providing an extra layer to protect from the modest increase in UV index that reaches 7. Weather in February »Weather in March
The climate in March in Saint-Pierre reflects a balanced mix of warm temperatures and average rainfall. Compared to its preceding month, March sees a minimal increase in rainfall, while the high and low temperatures and relative humidity stay almost steady. Weather in March »Weather in April
April weather conditions in Saint-Pierre bring a noticeable shift from the preceding months. The high and low temperatures begin to fall, bringing cooler days and nights. Coupled with this change, rainfall drops significantly to 84mm (3.31") compared to 119mm (4.69") in March. Weather in April »Weather in May
As Saint-Pierre moves into May, the weather begins to dry up, giving way to a significant decrease in rainfall, which falls to 44mm (1.73"), ushering in the driest period of the year. The high and low temperatures continue their downward trend from April, providing noticeably cooler days and nights. Weather in May »Weather in June
The month of June in Saint-Pierre ushers in the peak of the dry spell with only 21mm (0.83") of rain. This represents the period with the lowest rainfall in the whole year, further enhancing the dry conditions witnessed from May. At the same time, the city experiences a further decrease in high and low temperatures, contributing to milder weather conditions. Weather in June »Weather in July
July in Saint-Pierre continues the trend of milder and drier weather with only a slight increase in rainfall and temperatures compared to June. The wind speed increases further, reaching a peak of 19.8km/h (12.3mph), providing a gentle, cooling breeze during the warmest part of the day. Weather in July »Weather in August
In August, Saint-Pierre's weather witnesses a marginal increase in rainfall from 16mm (0.63") in July to 11mm (0.43") while the high and low temperatures remain fairly constant, marking a stable weather pattern. Though the wind speed decrease slightly from July's peak, it still remains relatively high at 18.9km/h (11.7mph). Weather in August »Weather in September
September marks the end of the dry spell in Saint-Pierre, with a subtle increase in average rainfall from 11mm (0.43") in August to 10mm (0.39"). This minor upward shift is also reflected in high and low temperatures which rise marginally, hinting at the onset of warmer months. Weather in September »Weather in October
October represents a significant shift in weather conditions in Saint-Pierre, with rainfall rising to 34mm (1.34"), indicating the end of the dry period and the beginning of the rainy season. The high and low temperatures continue their upward trend, reaching their second quarter's peak. Weather in October »Weather in November
November in Saint-Pierre serves as a precursor to the year's wettest month with a substantive increase in average rainfall to 79mm (3.11"). Concurrently, there is a considerable rise in the high and low temperatures, contributing to a greater sense of warmth. Weather in November »Weather in December
December in Saint-Pierre marks both the warmest and the second wettest month of the year. There is a noticeable increase in both the high and low temperatures, culminating in the warmest month, with the sea temperature also peaking at 26.7°C (80.1°F) for the year. Weather in December »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Saint-Pierre witnesses its peak temperatures during January through March, when the average high-temperature reaches 26.3°C (79.3°F).
The months with the highest humidity in Saint-Pierre are January through April, with an average relative humidity of 81%.
January is the month with the most rainfall. Rain falls for 23.7 days and accumulates 162mm (6.38") of precipitation.
Throughout the year, in Saint-Pierre, there are 207.9 rainfall days, and 756mm (29.76") of precipitation is accumulated.
The months with the lowest UV index are January, March through December, with an average maximum UV index of 6.
February is the month with the highest UV index in Saint-Pierre, Reunion, with an average maximum UV index of 7.
With an average sea temperature of 28.4°C (83.1°F), March is the month with the warmest seawater.
The month with the least sunshine is May, with an average of 6.9h of sunshine.
With an average of 10h and 54min of daylight, June has the shortest days of the year in Saint-Pierre.
July stands out as Saint-Pierre's coldest month, with an average high-temperature of 21.3°C (70.3°F) and a low-temperature of 18.8°C (65.8°F).
The months with the lowest humidity in Saint-Pierre, Reunion, are July through September, with an average relative humidity of 77%.
September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 10mm (0.39") of precipitation.
September is the month with the coldest seawater, with an average sea temperature of 23.7°C (74.7°F).
With an average of 10.9h of sunshine, October has the most sunshine of the year.
With an average of 13h and 24min of daylight, December has the longest days of the year in Saint-Pierre, Reunion.
Saint-Pierre does not observe Daylight Saving Time (DST). +04 timezone is used over the entire year.
Average temperature
Saint-Pierre, Reunion
The warmest months (with the highest average high temperature) are January, February and March (26.3°C).
The month with the lowest average high temperature is July (21.3°C).
The months with the highest average low temperature are January and February (24.3°C).
The coldest month (with the lowest average low temperature) is July (18.8°C).
Average pressure
Saint-Pierre, 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:
1021.5mbar - 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 (1021.5mbar).
The month with the lowest atmospheric pressure is February (1011.1mbar).
Average wind speed
Saint-Pierre, Reunion
- Average wind speed in January:
15.8km/h - Average wind speed in February:
15.6km/h - Average wind speed in March:
16.8km/h - Average wind speed in April:
16.7km/h - Average wind speed in May:
16.7km/h - Average wind speed in June:
19.1km/h
- Average wind speed in July:
19.8km/h - Average wind speed in August:
18.9km/h - Average wind speed in September:
18.2km/h - Average wind speed in October:
15.3km/h - Average wind speed in November:
13.4km/h - Average wind speed in December:
13.5km/h
The windiest month (with the highest average wind speed) is July (19.8km/h).
The calmest month (with the lowest average wind speed) is November (13.4km/h).
Average humidity
Saint-Pierre, Reunion
The months with the highest relative humidity are January, February, March and April (81%).
The months with the lowest relative humidity are July, August and September (77%).
Average rainfall
Saint-Pierre, Reunion
- Average rainfall in January:
162mm - Average rainfall in February:
110mm - Average rainfall in March:
119mm - Average rainfall in April:
84mm - Average rainfall in May:
44mm - Average rainfall in June:
21mm
The wettest month (with the highest rainfall) is January (162mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days
Saint-Pierre, Reunion
- Average rainfall days in January:
23.7 days - Average rainfall days in February:
23.4 days - Average rainfall days in March:
24.9 days - Average rainfall days in April:
19.8 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
12.2 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
16.6 days - Average rainfall days in December:
21.2 days
The month with the highest number of rainy days is March (24.9 days).
The month with the least rainy days is September (9.5 days).
Average sea temperature
Saint-Pierre, Reunion
The best month for swimming (with the highest average sea temperature) is March (28.4°C).
The coldest month (with the lowest average sea temperature) is September (23.7°C).
Average daylight / Average sunshine
Saint-Pierre, Reunion
- Average daylight in January:
13h and 18min - Average daylight in February:
12h and 48min - Average daylight in March:
12h and 12min - Average daylight in April:
11h and 36min - Average daylight in May:
11h and 6min - Average daylight in June:
10h and 54min
- Average daylight in July:
11h and 0min - Average daylight in August:
11h and 24min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 36min - Average daylight in November:
13h and 6min - Average daylight in December:
13h and 24min
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:
10h and 6min - Average sunshine in February:
8h and 18min - Average sunshine in March:
8h and 18min - Average sunshine in April:
7h and 54min - Average sunshine in May:
6h and 54min - Average sunshine in June:
7h and 0min
- Average sunshine in July:
7h and 0min - Average sunshine in August:
8h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
10h and 54min - Average sunshine in November:
10h and 36min - Average sunshine in December:
10h and 36min
The month with the most sunshine is October (Average sunshine: 10h and 54min).
The month with the least sunshine is May (Average sunshine: 6h and 54min).
Average sunshine days
Saint-Pierre, Reunion
- Average sunshine days in January:
2.9 days - Average sunshine days in February:
1.7 days - Average sunshine days in March:
2.5 days - Average sunshine days in April:
5.3 days - Average sunshine days in May:
7.5 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
12.8 days - Average sunshine days in October:
11.5 days - Average sunshine days in November:
6.9 days - Average sunshine days in December:
3.5 days
The month with the most sunshine days is August (13.5 days).
The month with the least sunshine days is February (1.7 days).
Average UV index
Saint-Pierre, Reunion
The month with the highest UV index is February (UV index 7).
The months with the lowest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover
Saint-Pierre, Reunion
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 21).
Average visibility
Saint-Pierre, Reunion
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
