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Contents
- The climate of Caldeiras
- The best time to visit Caldeiras
- The worst time to visit Caldeiras
- Spring weather in Caldeiras
- Summer weather in Caldeiras
- Autumn weather in Caldeiras
- Winter weather in Caldeiras
- 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 Caldeiras
Caldeiras, São Tomé and Príncipe is guided by a tropical wet and dry climate, known as savanna in the Köppen climate classification. The geographical position, lying within the tropics, backs up the presence of such climatic variations.
Throughout the year, the weather showcases monthly average temperatures not varying drastically. High temperatures range from 24.5°C (76.1°F) to 28.8°C (83.8°F) and low temperatures hover between 27°C (80.6°F) and 23°C (73.4°F), offering a mild, warm climate. Humidity remains relatively constant on a historical basis, falling between 76% to 83%.
Rainfall varies strikingly throughout the year. The likelihood of precipitation peaks from 100mm (3.94") to 224mm (8.82") with minima observed from June to September, dropping as low as 9mm (0.35"). Correspondingly, the number of rainfall days register changes - reaching a maximum of 28.6 days in December to as low as just 7.3 days in June.
Visibility remains steadily at 10km (6.2mi) for the majority of the year, while UV index predominantly stays at 7, dropping to a low of 5 in July. The wind speed on an average basis registers between 10.8km/h (6.7mph) to 17.7km/h (11mph).
Throughout the year, the weather showcases monthly average temperatures not varying drastically. High temperatures range from 24.5°C (76.1°F) to 28.8°C (83.8°F) and low temperatures hover between 27°C (80.6°F) and 23°C (73.4°F), offering a mild, warm climate. Humidity remains relatively constant on a historical basis, falling between 76% to 83%.
Rainfall varies strikingly throughout the year. The likelihood of precipitation peaks from 100mm (3.94") to 224mm (8.82") with minima observed from June to September, dropping as low as 9mm (0.35"). Correspondingly, the number of rainfall days register changes - reaching a maximum of 28.6 days in December to as low as just 7.3 days in June.
Visibility remains steadily at 10km (6.2mi) for the majority of the year, while UV index predominantly stays at 7, dropping to a low of 5 in July. The wind speed on an average basis registers between 10.8km/h (6.7mph) to 17.7km/h (11mph).
The best time to visit Caldeiras
Given the clear weather, lower humidity and minimal rainfall, the period from June to September proves to be optimal for a visit to Caldeiras. These months witness temperatures in the lower range of 24.3°C (75.7°F) to 25.6°C (78.1°F) with a relative humidity from 81% to 83%. The rainfall is quite low, dropping down to 9mm (0.35") between July and August. The number of daylight hours remain at 12.1 throughout the year, offering ample sunshine and outdoor activity time.
The worst time to visit Caldeiras
With accentuated rainfall and marginally colder temperatures, the period from November to February might be less appealing for tourists. These months see rainfall from 126mm (4.96") to 224mm (8.82"), accompanied by up to 28.6 days of rainfall. Although the temperatures range between 26.2°C (79.2°F) to 28.8°C (83.8°F), the higher level of humidity from 79% to 81% renders a higher degree of discomfort.
Spring weather in Caldeiras
Spring in Caldeiras is marked by temperatures varying from 27.8°C (82°F) to 28.6°C (83.5°F) on the higher side and 26.3°C (79.3°F) to 27.2°C (81°F) on the lower side. Rainfall shows a gradual increase from 122mm (4.8") in May up to 126mm (4.96") in April. During this period, the number of rain days ranges from 20.5 to 22. Wind speeds, in the meanwhile, reflect a moderate increase from 10.9km/h (6.8mph) to 13km/h (8.1mph).
Summer weather in Caldeiras
The summer months of June to August experience slightly lower temperatures, varying from 24.5°C (76.1°F) to 25.6°C (78.1°F), and a marked decrease in rainfall down to 9mm (0.35") in July. The number of days with rainfall is noticeably fewer, falling down to 7.3 in June. Wind speed hikes up to 17.7km/h (11mph) in July, presenting a more breezy environment.
Autumn weather in Caldeiras
Autumn shows mildly increasing temperatures from 24.8°C (76.6°F) to 26.4°C (79.5°F). Rainfall, however, shows a dramatic rise, reaching 220mm (8.66") in October. The number of rain days follows suit with 15.8 days in September to an entire 24.7 days in October. Average wind speed during this period reduces gradually from 16.8km/h (10.4mph) to 14.2km/h (8.8mph).
Winter weather in Caldeiras
In winter, temperatures subtly climb up again, spanning from 27.1°C (80.8°F) to 27.5°C (81.5°F), while rainfall fluctuates between 159mm (6.26") to 224mm (8.82"). The number of rainy days maintains a high count from 26.7 to 28.6. Wind speed declines progressively from 14.2km/h (8.8mph) to 10.8km/h (6.7mph) during these months, rounding off the yearly weather patterns.
Weather in January
In São Tomé and Príncipe's tropical island of Caldeiras, January boasts a high average temperature of 28°C (82.4°F) and a low of 27°C (80.6°F) with relative humidity of 77%. Dominated by tropical rains, the city experiences 130mm (5.12") of rainfall spanning across 27 days. Weather in January »
Weather in February
As February rolls in, the weather in Caldeiras remains relatively similar to January, but with a slight increase in sunlight hours to 8.6 hours per day. The city benefits from considerable rain accumulation (around 100mm (3.94")) over the course of 23 days. Weather in February »
Weather in March
The weather in Caldeiras in March tends to slightly warm up, peaking at temperatures up to 28.8°C (83.8°F). March witnesses 119mm (4.69") of rainfall spread over 24 days, roughly the same as the previous month. The extra precipitation does nothing to wash away the exquisite beauty of the island's flora and fauna. Weather in March »
Weather in April
In April, Caldeiras sees a remarkable continuance of its consistent tropical weather, with temperatures hovering close to the year's averages. Accompanying the warm temperatures is 126mm (4.96") of rainfall, slightly more than in March, distributed over 22 days. Weather in April »
Weather in May
May presents a noticeable change in the tropical weather in Caldeiras, starting with a decrease in average high temperature to 27.8°C (82°F). Throughout the month, a total of 122mm (4.8") rainfall is experienced over 20 days. The air tends to be more saturated with higher relative humidity levels, which, along with cloudier skies and lesser sunshine, edges out a cooler period. Weather in May »
Weather in June
June marks a notable shift from the typical tropical weather in Caldeiras. The city's average high temperature drops to 25.6°C (78.1°F). June is the driest month of the year, with only 22mm (0.87") of rainfall over 7 days, a significant change from previous months. Weather in June »
Weather in July
The year transitions into its coolest month in July, with the average high temperature in Caldeiras being a comfortable 24.5°C (76.1°F). July's weather sees a marginal increase in rainfall from the previous month, to 9mm (0.35") over 8 days. Weather in July »
Weather in August
The weather in Caldeiras in August offers relatively stable conditions, similar to those in July. There's a slight rise in the average maximum temperature, reaching 24.8°C (76.6°F), while the rainfall increases to 21mm (0.83") over 12 days. Weather in August »
Weather in September
September marks the onset of increased rainfall in Caldeiras, with 35mm (1.38") over 15 days, as the city transitions back to its usual tropical weather pattern from its brief dry spell. The average high temperature goes up slightly to 25.5°C (77.9°F). Weather in September »
Weather in October
The weather in Caldeiras in October could be characterized as a return of the heavy rains, as the city sees up to 220mm (8.66") over 24 days, a significant leap from the previous month. The average high temperature continues to rise reaching 26.4°C (79.5°F). Weather in October »
Weather in November
November's weather in Caldeiras remains similar to October's, albeit a little warmer with the average high temperature going up to 27.1°C (80.8°F). The city gets slightly more rain, about 224mm (8.82") spread across 26 days. Weather in November »
Weather in December
Concluding the year, the December weather in Caldeiras continues its tropical trend, with average high temperatures recorded at 27.5°C (81.5°F). The rainfall dips a bit to 159mm (6.26") over 28 days, but the city still buzzes with rich tropical beauty. Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Caldeiras?
Throughout the year, in Caldeiras, there are 241.7 rainfall days, and 1287mm (50.67") of precipitation is accumulated.
What is the month with the highest UV index in Caldeiras?
The months with the highest UV index are January through May, October through December, with an average maximum UV index of 7.
What month has the most sunshine in Caldeiras?
February has the most sunshine of the year in Caldeiras, with an average of 8.6h of sunshine.
What month is the hottest in Caldeiras?
March, characterized by an average high temperature of 28.8°C (83.8°F) and a low temperature of 27.5°C (81.5°F), is generally the warmest month.
What is the least humid month in Caldeiras?
With an average relative humidity of 76%, March is the least humid month in Caldeiras, São Tomé and Príncipe.
When are the longest days in Caldeiras?
With an average of 12h and 6min of daylight, June has the longest days of the year in Caldeiras, São Tomé and Príncipe.
What is the coldest time of year in Caldeiras?
Caldeiras, São Tomé and Príncipe, notes the coldest temperatures in July, with a average high of 24.5°C (76.1°F) and a low of 23°C (73.4°F).
What is the driest month in Caldeiras?
July is the month with the least rainfall. Rain falls for 8.4 days and accumulates 9mm (0.35") of precipitation.
When is the lowest UV index in Caldeiras?
July is the month with the lowest UV index in Caldeiras, with an average maximum UV index of 5.
What are the most humid months in Caldeiras?
The months with the highest humidity are August through October, with an average relative humidity of 83%.
What is the month with the least sunshine in Caldeiras?
August has the least sunshine of the year in Caldeiras, São Tomé and Príncipe, with an average of 5h of sunshine.
What is the wettest month in Caldeiras?
November is the month with the most rainfall in Caldeiras. Rain falls for 26.7 days and accumulates 224mm (8.82") of precipitation.
What is the month with the shortest days in Caldeiras?
The month with the shortest days is December, with an average of 12h and 6min of daylight.
Is there Daylight Saving Time (DST) in Caldeiras?
Caldeiras, São Tomé and Príncipe, does not utilize Daylight Saving Time (DST). GMT timezone is used over the entire year.
Average temperature
Caldeiras, São Tomé and Príncipe
The warmest month (with the highest average high temperature) is March (28.8°C).
The month with the lowest average high temperature is July (24.5°C).
The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is July (23°C).
Average pressure
Caldeiras, São Tomé and Príncipe
- Average pressure in January:
1010.7mbar - Average pressure in February:
1009.8mbar - Average pressure in March:
1009.9mbar - Average pressure in April:
1010.1mbar - Average pressure in May:
1011.3mbar - Average pressure in June:
1013.5mbar
- Average pressure in July:
1014.3mbar - Average pressure in August:
1014.1mbar - Average pressure in September:
1013.1mbar - Average pressure in October:
1011.4mbar - Average pressure in November:
1010.4mbar - Average pressure in December:
1010.6mbar
The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is February (1009.8mbar).
Average wind speed
Caldeiras, São Tomé and Príncipe
- Average wind speed in January:
11.1km/h - Average wind speed in February:
11.6km/h - Average wind speed in March:
11.7km/h - Average wind speed in April:
10.9km/h - Average wind speed in May:
13km/h - Average wind speed in June:
17.6km/h
- Average wind speed in July:
17.7km/h - Average wind speed in August:
17.1km/h - Average wind speed in September:
16.8km/h - Average wind speed in October:
14.2km/h - Average wind speed in November:
12.3km/h - Average wind speed in December:
10.8km/h
The windiest month (with the highest average wind speed) is July (17.7km/h).
The calmest month (with the lowest average wind speed) is December (10.8km/h).
Average humidity
Caldeiras, São Tomé and Príncipe
The months with the highest relative humidity are August, September and October (83%).
The month with the lowest relative humidity is March (76%).
Average rainfall
Caldeiras, São Tomé and Príncipe
- Average rainfall in January:
130mm - Average rainfall in February:
100mm - Average rainfall in March:
119mm - Average rainfall in April:
126mm - Average rainfall in May:
122mm - Average rainfall in June:
22mm
The wettest month (with the highest rainfall) is November (224mm).
The driest month (with the least rainfall) is July (9mm).
Average rainfall days
Caldeiras, São Tomé and Príncipe
- Average rainfall days in January:
27.1 days - Average rainfall days in February:
23.4 days - Average rainfall days in March:
24.4 days - Average rainfall days in April:
22 days - Average rainfall days in May:
20.5 days - Average rainfall days in June:
7.3 days
- Average rainfall days in July:
8.4 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
15.8 days - Average rainfall days in October:
24.7 days - Average rainfall days in November:
26.7 days - Average rainfall days in December:
28.6 days
The month with the highest number of rainy days is December (28.6 days).
The month with the least rainy days is June (7.3 days).
Average daylight / Average sunshine
Caldeiras, São Tomé and Príncipe
- Average daylight in January:
12h and 1min - Average daylight in February:
12h and 1min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 1min - Average daylight in May:
12h and 1min - Average daylight in June:
12h and 1min
- Average daylight in July:
12h and 1min - Average daylight in August:
12h and 1min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 1min - Average daylight in November:
12h and 1min - Average daylight in December:
12h and 1min
The month with the longest days is June (Average daylight: 12h and 6min).
The month with the shortest days is December (Average daylight: 12h and 6min).
- Average sunshine in January:
8h and 2min - Average sunshine in February:
8h and 4min - Average sunshine in March:
8h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
7h and 4min - Average sunshine in June:
6h and 2min
- Average sunshine in July:
6h and 0min - Average sunshine in August:
5h and 0min - Average sunshine in September:
5h and 2min - Average sunshine in October:
6h and 4min - Average sunshine in November:
7h and 0min - Average sunshine in December:
8h and 1min
The month with the most sunshine is February (Average sunshine: 8h and 36min).
The month with the least sunshine is August (Average sunshine: 5h and 0min).
Average sunshine days
Caldeiras, São Tomé and Príncipe
- Average sunshine days in January:
3.1 days - Average sunshine days in February:
3.8 days - Average sunshine days in March:
5.3 days - Average sunshine days in April:
6.2 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
16.4 days
- Average sunshine days in July:
14.8 days - Average sunshine days in August:
8 days - Average sunshine days in September:
5.3 days - Average sunshine days in October:
2.7 days - Average sunshine days in November:
2 days - Average sunshine days in December:
1.5 days
The month with the most sunshine days is June (16.4 days).
The month with the least sunshine days is December (1.5 days).
Average UV index
Caldeiras, São Tomé and Príncipe
The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover
Caldeiras, São Tomé and Príncipe
The month with the most cloud cover is August (Cloud cover 65).
The month with the least cloud cover is February (Cloud cover 37).
Average visibility
Caldeiras, São Tomé and Príncipe
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).
Caldeiras, São Tomé and Príncipe
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