December weather forecastHeroumbili, Comoros
December
Weather in December
The first month of the summer, December, is still a warm month in Heroumbili, Comoros, with an average temperature varying between 27°C (80.6°F) and 28.4°C (83.1°F).Temperature
December experiences an average high-temperature of a still warm 28.4°C (83.1°F), barely different from November's 27.6°C (81.7°F). Heroumbili, in December, logs an average low-temperature of 27°C (80.6°F), a subtle step down from daytime readings.Heat index
The heat index in December is evaluated at a tropical 32°C (89.6°F). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 quite important for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In Heroumbili, the average relative humidity in December is 75%.Rainfall
In Heroumbili, in December, it is raining for 19.2 days, with typically 110mm (4.33") of accumulated precipitation. Throughout the year, there are 190.9 rainfall days, and 867mm (34.13") of precipitation is accumulated.Daylight
The month with the longest days in Heroumbili is December, with an average of 12h and 48min of daylight.On the first day of the month, sunrise is at 05:32 and sunset at 18:18. On the last day of December, sunrise is at 05:45 and sunset at 18:33 EAT.
Sunshine
In Heroumbili, the average sunshine in December is 10.7h.UV index
January through June, September 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 hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 7 in December interprets into the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Heroumbili, Comoros
- Average high temperature in December: 28.4°C
The warmest month (with the highest average high temperature) is March (28.6°C).
The months with the lowest average high temperature are July, August and September (25.4°C).
- Average low temperature in December: 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 August (23.9°C).
Average pressure in December
Heroumbili, Comoros
- Average pressure in December: 1010.9mbar
The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is February (1010mbar).
Average wind speed in December
Heroumbili, Comoros
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is July (22.1km/h).
The calmest months (with the lowest average wind speed) are March, November and December (12km/h).
Average humidity in December
Heroumbili, Comoros
- Average humidity in December: 75%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in December
Heroumbili, Comoros
- Average rainfall in December: 110mm
The wettest month (with the highest rainfall) is January (176mm).
The driest months (with the least rainfall) are August and September (14mm).
Average rainfall days in December
Heroumbili, Comoros
- Average rainfall days in December: 19.2 days
The month with the highest number of rainy days is April (23.1 days).
The month with the least rainy days is August (9.8 days).
Average daylight in December /
Average sunshine in December
Heroumbili, Comoros
- Average daylight in December: 12h and 48min
The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in December: 10h and 42min
The month with the most sunshine is November (Average sunshine: 11h and 18min).
The months with the least sunshine are May and June (Average sunshine: 7h and 12min).
Average sunshine days in December
Heroumbili, Comoros
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is August (15.8 days).
The month with the least sunshine days is April (5.1 days).
Average UV index in December
Heroumbili, Comoros
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).
Average cloud cover in December
Heroumbili, Comoros
- Average cloud cover in December: 34
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Heroumbili, Comoros
- Average visibility in December: 10km
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).
