May weather forecast
Java, São Tomé and Príncipe

May

Weather in May

Java, São Tomé and Príncipe, experiences a continual drop in climatic extremities through May. In comparison to April, the weather conditions are more stable with a uniform climate pattern. The greatest shift in this month is the increase in wind speed, with gusts reaching 18.5km/h (11.5mph), stirring up the otherwise tranquil atmosphere. The milder weather, along with less rain, makes May a favorable time for outdoor activities. The predominantly clear sky enables the city to bask in sunshine, bringing a brighter aura to the region.

Temperature

May's advent in Java presents an average high-temperature of a still moderately hot 27.8°C (82°F), indicating a slight variation from the conditions of the previous month. Java's average temperature throughout the nights in May exhibits a minor decrease from daytime highs, stabilizing at a still moderately hot 26.3°C (79.3°F).

Heat index

For May, the heat index is evaluated at a tropical 31°C (87.8°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Java, in May, during 20.5 rainfall days, 122mm (4.8") of precipitation is typically accumulated. In Java, during the entire year, the rain falls for 241.7 days and collects up to 1287mm (50.67") of precipitation.

Daylight

In Java, the average length of the day in May is 12h and 8min.
On the first day of the month, sunrise is at 05:26 and sunset at 17:34. On the last day of May, sunrise is at 05:27 and sunset at 17:35 GMT.

Sunshine

The average sunshine in May in Java is 7.6h.

UV index

The months with the highest UV index in Java are January through May, October through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 7 in May transforms into this advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Boost your sun resistance with garments that are densely woven yet spacious.

Frequently asked questions

What is the usual temperature for Java in May?
The high-temperature during May is 27.8°C (82°F) and the low-temperature is 26.3°C (79.3°F). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 31°C (87.8°F).
What is the average humidity in May in Java?
In May, the average relative humidity in Java, São Tomé and Príncipe, is 79%.
How much does it rain in Java in May?
In Java, São Tomé and Príncipe, in May, during 20.5 rainfall days, 122mm (4.8") of precipitation is typically accumulated.
What is the average length of the day in May in Java?
In May, the average day length in Java, São Tomé and Príncipe, is 12h and 8min.
When is the sunrise / sunset in May in Java?
On the first day of May in Java, sunrise is at 05:26 and sunset at 17:34. On the last day of the month, sunrise is at 05:27 and sunset at 17:35 GMT.
How long on average sun shines in May in Java?
The average sunshine duration in May in Java is 7.6h.
When is the highest UV index in Java?
The months with the highest UV index are January through May, October through December, with an average maximum UV index of 7.
How high is the UV index in May in Java?
In Java, the average daily maximum UV index in May 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 May
Java, São Tomé and Príncipe
  • Average high temperature in May: 27.8°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 May: 26.3°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 May
Java, São Tomé and Príncipe
  • Average pressure in May: 1011.3mbar

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 May
Java, São Tomé and Príncipe
  • Average wind speed in May: 13km/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 May
Java, São Tomé and Príncipe
  • Average humidity in May: 79%

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 May
Java, São Tomé and Príncipe
  • Average rainfall in May: 122mm

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

Average rainfall days in May
Java, São Tomé and Príncipe
  • Average rainfall days in May: 20.5 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 May /
Average sunshine in May
Java, São Tomé and Príncipe
  • Average daylight in May: 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 May: 7h and 4min

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 May
Java, São Tomé and Príncipe
  • Average sunshine days in May: 9.2 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 May
Java, São Tomé and Príncipe
  • Average UV index in May: 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 May
Java, São Tomé and Príncipe
  • Average cloud cover in May: 44

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 May
Java, São Tomé and Príncipe
  • Average visibility in May: 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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