January weather forecast
Santa Clara, São Tomé and Príncipe

January

Weather in January

January in Santa Clara, São Tomé, and Príncipe is characterized by the onset of the rainy season. A humidity of 77% makes the month a peak period for rainfall with total precipitation reaching 130mm (5.12") spread across 27.1 days. Temperatures maintain generally consistent both day and night, causing a warm and damp climate. Winds blow mildly, providing a bit of a reprieve against the hot and humid conditions. As the day comes to a close, a gentle breeze serves as a pleasant end.

Temperature

The commencement of January in Santa Clara brings an average high-temperature of a still warm 28°C (82.4°F), marking an inconsequential divergence from December. The temperature during January sees a subtle transition from day to night, averaging a low of 27°C (80.6°F).

Heat index

Throughout January, the heat index is evaluated at a hot 32°C (89.6°F). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In Santa Clara, São Tomé and Príncipe, the average relative humidity in January is 77%.

Rainfall

In Santa Clara, São Tomé and Príncipe, in January, during 27.1 rainfall days, 130mm (5.12") of precipitation is typically accumulated. Throughout the year, there are 241.7 rainfall days, and 1287mm (50.67") of precipitation is accumulated.

Daylight

In January, the average length of the day is 12h and 7min.
On the first day of the month, sunrise is at 05:33 and sunset at 17:39. On the last day of January, in Santa Clara, sunrise is at 05:43 and sunset at 17:49 GMT.

Sunshine

In Santa Clara, the average sunshine in January is 8.3h.

UV index

January through May, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during January morphs into the following directions:
Fend off overexposure. Sun protection is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

How hot is January in Santa Clara?
Santa Clara in January has an average high-temperature of 28°C (82.4°F) and an average low-temperature of 27°C (80.6°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in January is evaluated at 32°C (89.6°F).
What is the average humidity in January in Santa Clara?
In January, the average relative humidity is 77%.
How much does it rain in Santa Clara in January?
In Santa Clara, São Tomé and Príncipe, during January, the rain falls for 27.1 days and regularly aggregates up to 130mm (5.12") of precipitation.
How many hours of daylight does Santa Clara have in January?
In Santa Clara, São Tomé and Príncipe, the average day length in January is 12h and 7min.
What time are sunrise and sunset in January in Santa Clara?
In January, on the first day of the month, sunrise is at 05:33 and sunset at 17:39. On the last day of the month, sunrise is at 05:43 and sunset at 17:49 GMT.
How many hours of sunshine does Santa Clara have in January?
The average sunshine duration in January in Santa Clara is 8.3h.
What are the months with the highest UV index in Santa Clara?
The months with the highest UV index in Santa Clara, São Tomé and Príncipe, are January through May, October through December, with an average maximum UV index of 7.
How high is the UV index in January in Santa Clara?
In January, the average daily maximum UV index in Santa Clara is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January - Santa Clara, São Tomé and Príncipe
Average temperature in January
Santa Clara, São Tomé and Príncipe
  • Average high temperature in January: 28°C

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).

  • Average low temperature in January: 27°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 in January - Santa Clara, São Tomé and Príncipe
Average pressure in January
Santa Clara, São Tomé and Príncipe
  • Average pressure in January: 1010.7mbar

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 in January - Santa Clara, São Tomé and Príncipe
Average wind speed in January
Santa Clara, São Tomé and Príncipe
  • Average wind speed in January: 11.1km/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 in January - Santa Clara, São Tomé and Príncipe
Average humidity in January
Santa Clara, São Tomé and Príncipe
  • Average humidity in January: 77%

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 in January - Santa Clara, São Tomé and Príncipe
Average rainfall in January
Santa Clara, São Tomé and Príncipe
  • Average rainfall in January: 130mm

The wettest month (with the highest rainfall) is November (224mm).
The driest month (with the least rainfall) is July (9mm).

Average rainfall days in January - Santa Clara, São Tomé and Príncipe
Average rainfall days in January
Santa Clara, São Tomé and Príncipe
  • Average rainfall days in January: 27.1 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 in January / Average sunshine in January - Santa Clara, São Tomé and Príncipe
Average daylight in January /
Average sunshine in January
Santa Clara, São Tomé and Príncipe
  • Average daylight in January: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 6min).
The month with the shortest days is November (Average daylight: 12h and 6min).

  • Average sunshine in January: 8h and 2min

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 in January - Santa Clara, São Tomé and Príncipe
Average sunshine days in January
Santa Clara, São Tomé and Príncipe
  • Average sunshine days in January: 3.1 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 in January - Santa Clara, São Tomé and Príncipe
Average UV index in January
Santa Clara, São Tomé and Príncipe
  • Average UV index in January: 7

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 in January - Santa Clara, São Tomé and Príncipe
Average cloud cover in January
Santa Clara, São Tomé and Príncipe
  • Average cloud cover in January: 38

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 in January - Santa Clara, São Tomé and Príncipe
Average visibility in January
Santa Clara, São Tomé and Príncipe
  • Average visibility in January: 10km

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).

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