January weather forecast
Stone Town, Tanzania

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Weather in January

The weather in Stone Town, Tanzania, typically begins the year reliably warm, similar to December's tropical temperatures. A high of 29.4°C (84.9°F) precedes slightly cooler nights marked by a low of 27°C (80.6°F), characteristic of the town's moderate tropical climate. Predominantly, the winds blow steadily and significantly, affecting the feel of the temperature. Compared to the upcoming February, January is marked by slightly heavier winds and a higher percentage of cloud cover. Despite the heat, the weather remains pleasant and welcoming for outdoor activities, especially given the relatively clear skies created by the moderate cloud cover.

Temperature

January's onset in Stone Town records an average high-temperature of a still moderately hot 29.4°C (84.9°F), identical to December. January's average low-temperature is a still moderately hot 27°C (80.6°F), reflecting a minor difference from the day's peak temperatures.

Heat index

In January, the average heat index is evaluated at a very hot 35°C (95°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. 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 quite important for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

January, April, May and November, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Stone Town, in January, during 16.6 rainfall days, 56mm (2.2") of precipitation is typically accumulated. Throughout the year, there are 255.1 rainfall days, and 1172mm (46.14") of precipitation is accumulated.

Daylight

The average length of the day in January is 12h and 26min.
On the first day of the month, sunrise is at 06:12 and sunset at 18:40. On the last day of January, sunrise is at 06:25 and sunset at 18:47 EAT.

Sunshine

In January, the average sunshine is 8.5h.

UV index

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 7 in January transforms into this advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

Is it hot during January?

An average high-temperature, in January, in Stone Town, is 29.4°C (84.9°F) and the average low-temperature is 27°C (80.6°F). In January, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35°C (95°F).

What is the most humid month?

January, April, May and November, with an average relative humidity of 78%, are most humid months.

What is the average humidity in January?

In Stone Town, the average relative humidity in January is 78%.

How much does it rain in January?

In Stone Town, during January, the rain falls for 16.6 days and regularly aggregates up to 56mm (2.2") of precipitation.

What is the average length of the day in January?

In Stone Town, the average day length in January is 12h and 26min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 06:12 and sunset at 18:40. On the last day of the month, sunrise is at 06:25 and sunset at 18:47 EAT.

How long on average sun shines in January in Stone Town?

In Stone Town, the average sunshine duration in January is 8.5h.

What are the months with the highest UV index?

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 7.

How high is the UV index in January?

The average daily maximum UV index in January is 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Average temperature in January
Stone Town, Tanzania

Average temperature in January - Stone Town, Tanzania
  • Average high temperature in January: 29.4°C

The warmest month (with the highest average high temperature) is March (29.9°C).
The month with the lowest average high temperature is August (26.8°C).

  • Average low temperature in January: 27°C

The month with the highest average low temperature is March (27.2°C).
The coldest month (with the lowest average low temperature) is August (23.5°C).

Average pressure in January
Stone Town, Tanzania

Average pressure in January - Stone Town, Tanzania
  • Average pressure in January: 1010.4mbar

The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is February (1010.2mbar).

Average wind speed in January
Stone Town, Tanzania

Average wind speed in January - Stone Town, Tanzania
  • Average wind speed in January: 19.6km/h

The windiest month (with the highest average wind speed) is July (20.6km/h).
The calmest month (with the lowest average wind speed) is November (11.8km/h).

Average humidity in January
Stone Town, Tanzania

Average humidity in January - Stone Town, Tanzania
  • Average humidity in January: 78%

The months with the highest relative humidity are January, April, May and November (78%).
The months with the lowest relative humidity are June and July (75%).

Average rainfall in January
Stone Town, Tanzania

Average rainfall in January - Stone Town, Tanzania
  • Average rainfall in January: 56mm

The wettest month (with the highest rainfall) is April (296mm).
The driest month (with the least rainfall) is September (31mm).

Average rainfall days in January
Stone Town, Tanzania

Average rainfall days in January - Stone Town, Tanzania
  • Average rainfall days in January: 16.6 days

The month with the highest number of rainy days is April (27.6 days).
The month with the least rainy days is February (14.2 days).

Average daylight in January /
Average sunshine in January
Stone Town, Tanzania

Average daylight in January / Average sunshine in January - Stone Town, Tanzania
  • Average daylight in January: 12h and 2min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).

  • Average sunshine in January: 8h and 3min

The month with the most sunshine is November (Average sunshine: 10h and 42min).
The month with the least sunshine is May (Average sunshine: 8h and 6min).

Average sunshine days in January
Stone Town, Tanzania

Average sunshine days in January - Stone Town, Tanzania
  • Average sunshine days in January: 7.8 days

The month with the most sunshine days is February (7.9 days).
The month with the least sunshine days is April (1.7 days).

Average UV index in January
Stone Town, Tanzania

Average UV index in January - Stone Town, Tanzania
  • Average UV index in January: 7

The months with the highest UV index are January, February, March, October, November and December (UV index 7).
The months with the lowest UV index are April, May, June, July, August and September (UV index 6).

Average cloud cover in January
Stone Town, Tanzania

Average cloud cover in January - Stone Town, Tanzania
  • Average cloud cover in January: 35

The month with the most cloud cover is April (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 28).

Average visibility in January
Stone Town, Tanzania

Average visibility in January - Stone Town, Tanzania
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are April and May (9km).

Stone Town, Tanzania

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