Climate and monthly weather forecastStone Town, Tanzania
Climate and monthly weather forecast
The climate of Stone Town
Stone Town, situated in Tanzania, is recognized as a location where the predominant climate category is Am as per the Köppen climate classification. This suggests a Tropical Monsoon climate, with an abundance of heat and humidity, which can notably influence weather patterns throughout the year.In-depth assessment of climatological parameters validates this classification. Across the twelve months, average high temperatures fluctuate minimally, hovering around the 27.5°C (81.5°F) to 29.9°C (85.8°F) range. The average low temperatures show a similar pattern, stabilizing between 23.5°C (74.3°F) to 27°C (80.6°F) throughout the year, indicating constant warm weather regardless of the season.
Bearing witness to the tropical monsoon climate, there is considerable variance in the average monthly rainfall, ranging from a low of 31mm (1.22") to a peak of 296mm (11.65"). Also, the total number of rainfall days indicates frequent precipitation throughout the year, with 14.2 to 27.6 days of rain expected per month. Although consistent, sunshine hours only vary lightly from 8.1 to 8.9 hours with pressure levels oscillating between 1010.2mb to 1016.9mb.
The best time to visit Stone Town
Balancing variables such as rainfall, daylight hours, and temperature, it emerges that the period spanning June through August is the most appealing time to plan a trip to Stone Town. Highly conducive weather conditions prevail in these months, with average high temperatures landing between 26.8°C (80.2°F) and 27.5°C (81.5°F), easing the intensity of the tropical heat.Additionally, these months witness relatively reduced rainfall compared to other times, registering 38mm (1.5") to 44mm (1.73"). This corresponds well with the increased number of daylight hours (from 11.8 hours to 12 hours on average), facilitating longer exploration times. Average relative humidity likewise dampers down to 75% in comparison to the yearly peak of 78%, offering a more comfortable atmosphere for outdoor activities.
The worst time to visit Stone Town
Visitors might wish to evade the months of April and May. A peak in rainfall occurs during this season, particularly in April, where average precipitation reaches an annual high of 296mm (11.65"). Consequently, these months average the highest number of rain days, from 25.6 to 27.6 days. Moreover, frequent rainfall contributes to elevated levels of cloud cover which further reduces visibility and brings down the average number of sunshine hours to 8.1 to 8.2 hours a day.Spring weather in Stone Town
The months from March to May mark the spring season in Stone Town. The period distinguishes itself by an increase in both average low temperatures (from 26.2°C (79.2°F) to 25.3°C (77.5°F)) and average high temperatures (from 29.9°C (85.8°F) to 28.2°C (82.8°F)). March introduces a noteworthy leap in rainfall, with precipitation almost tripling from 42mm (1.65") to 111mm (4.37"). The dessert of this increasement becomes a downpour in April, boasting the highest average rainfall of the year at 296mm (11.65").Summer weather in Stone Town
Summer, stretching from June to August, is characterized by a notable decrease in rainfall, favorably weather calms down from 217mm (8.54") in May to 44mm (1.73") in June. Days of rainfall are also reduced, and average temperatures moderate, with high temperatures dipping to a comfortable range of 26.8°C (80.2°F) to 27.5°C (81.5°F) and lows fluctuating between 23.5°C (74.3°F) and 24.2°C (75.6°F). Sunshine hours remain consistent at approximately 8.8 to 8.9 hours per day.Autumn weather in Stone Town
Autumn commences with temperatures averaging from 27.2°C (81°F) to 27.9°C (82.2°F) and lows from 23.9°C (75°F) to 24.9°C (76.8°F). Rainfall and rain days increase slightly, averaging from 31mm (1.22") to 79mm (3.11") and 17.2 to 18.2 days, respectively. Average daylight hours and sunshine days remain constant, ensuring sufficient time for outdoor activities.Winter weather in Stone Town
The winter season in Stone Town, from December to February, enlivens the city with peak sunshine hours. Average high temperatures remain at a toasty 29.4°C (84.9°F) to 29.6°C (85.3°F) and average low temperatures linger around a warm 26.8°C (80.2°F) to 27°C (80.6°F). Rainfall increases from the preceding months, with totals escalating from 106mm (4.17") to 114mm (4.49"), and the number of rainfall days also surges from 21.5 to 26.2 days.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. Weather in January »Weather in February
In February, the temperature in Stone Town fluctuates slightly from the preceding month, with an increase in the average high and a decrease in the average low. February's weather is marked by a slight drop in wind speed from 19.6km/h (12.2mph) to 16.7km/h (10.4mph), making it less blustery than January. Weather in February »Weather in March
Moving into March, the spread of temperatures slightly widens, reflecting a rise in daily low temperatures. This month sees a considerable increase in rainfall from 42mm (1.65") to 111mm (4.37"), signaling the impending rainy season. Weather in March »Weather in April
Stone Town in April undergoes a remarkable shift as the town enters its most substantial rainy season registering 296mm (11.65") of rainfall. While temperatures remain stable, the climate significantly changes due to this increase in precipitation. Weather in April »Weather in May
The month of May ushers in a period of cooler nights in Stone Town, with a transition to increasingly comfortable temperatures, hence a break from the constant heat. This town experiences a significant drop in rain levels from 296mm (11.65") in April to 217mm (8.54"). Weather in May »Weather in June
June in Stone Town often signals the driest period, distinguished by a brisk wind and relatively diminished rainfall. Regardless of the escalating wind speed from 19.8km/h (12.3mph) to 20.2km/h (12.6mph), conditions remain pleasant for various outdoor activities. Weather in June »Weather in July
July continues the trend initiated by June, with the dry season in Stone Town reaching its peak. Throughout July, the humidity levels remain stable, contributing to the pleasantly cool period. Perhaps the most significant characteristic of July is its minimal rainfall, even lower than June's already low levels, and carrying on into August. Weather in July »Weather in August
In Stone Town, August is highly anticipated, not for a dramatic change in weather from July, but for its consistently pleasant conditions. August maintains nearly identical rainfall and wind speeds as July, maintaining the dry season's charm. Weather in August »Weather in September
As the calendar turns to September, Stone Town witnesses a slight increase in rainfall but still maintains comfortable conditions for experiencing Tanzanian life. Despite the slight increase in rainfall from 38mm (1.5") in August to 31mm (1.22") in September, the month continues to be relatively dry. Weather in September »Weather in October
October brings hotter days to Stone Town while maintaining the dry spell dominating the previous half of the year. This month is generally slightly warmer than September but has a more significant increase in rainfall. Despite being preceded and succeeded by higher rainfall months, October remains fairly dry, a factor that adds to its charm. Weather in October »Weather in November
November marches into Stone Town with an evident increase in virtually all aspects of weather patterns, from temperatures to rainfall. Notably, rainfall increases significantly from 79mm (3.11") in October to 106mm (4.17") in November, indicating the return of the wet season. Weather in November »Weather in December
December in Stone Town is characterized by a significant increase in precipitation bringing in the town's second rainy season. The town records a rise in rainfall from 106mm (4.17") in November to a substantial 114mm (4.49") in December. Weather in December »Updated: Jul 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, April, May and November, with an average relative humidity of 78%, are most humid months.
Throughout the year, there are 255.1 rainfall days, and 1172mm (46.14") of precipitation is accumulated.
The months with the highest UV index are January through March, October through December, with an average maximum UV index of 7.
Stone Town records the warmest temperatures in March, averaging a high of 29.9°C (85.8°F) and a low of 27.2°C (81°F).
The month with the most rainfall is April, when the rain falls for 27.6 days and typically aggregates up to 296mm (11.65") of precipitation.
The months with the lowest UV index are April through September, with an average maximum UV index of 6.
The month with the least sunshine is May, with an average of 8.1h of sunshine.
June and July, with an average relative humidity of 75%, are the least humid months.
The month with the shortest days is June, with an average of 11h and 48min of daylight.
Stone Town's coldest temperatures are experienced in August, with average high temperatures of 26.8°C (80.2°F) and lows of 23.5°C (74.3°F).
The month with the least rainfall is September, when the rain falls for 17.2 days and typically collects 31mm (1.22") of precipitation.
With an average of 10.7h of sunshine, November has the most sunshine of the year.
December has the longest days of the year, with an average of 12h and 30min of daylight.
Stone Town does not observe Daylight Saving Time (DST). EAT timezone is used throughout the entire year.
Average temperature
Stone Town, Tanzania
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).
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
Stone Town, Tanzania
- Average pressure in January:
1010.4mbar - Average pressure in February:
1010.2mbar - Average pressure in March:
1010.5mbar - Average pressure in April:
1011.8mbar - Average pressure in May:
1014.2mbar - Average pressure in June:
1016mbar
- Average pressure in July:
1016.9mbar - Average pressure in August:
1016.6mbar - Average pressure in September:
1015.8mbar - Average pressure in October:
1013.5mbar - Average pressure in November:
1011.7mbar - Average pressure in December:
1010.8mbar
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
Stone Town, Tanzania
- Average wind speed in January:
19.6km/h - Average wind speed in February:
16.7km/h - Average wind speed in March:
12.9km/h - Average wind speed in April:
15.5km/h - Average wind speed in May:
19.8km/h - Average wind speed in June:
20.2km/h
- Average wind speed in July:
20.6km/h - Average wind speed in August:
17.5km/h - Average wind speed in September:
15.9km/h - Average wind speed in October:
14.4km/h - Average wind speed in November:
11.8km/h - Average wind speed in December:
14.9km/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
Stone Town, Tanzania
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
Stone Town, Tanzania
- Average rainfall in January:
56mm - Average rainfall in February:
42mm - Average rainfall in March:
111mm - Average rainfall in April:
296mm - Average rainfall in May:
217mm - Average rainfall in June:
44mm
The wettest month (with the highest rainfall) is April (296mm).
The driest month (with the least rainfall) is September (31mm).
Average rainfall days
Stone Town, Tanzania
- Average rainfall days in January:
16.6 days - Average rainfall days in February:
14.2 days - Average rainfall days in March:
24.4 days - Average rainfall days in April:
27.6 days - Average rainfall days in May:
25.6 days - Average rainfall days in June:
21 days
- Average rainfall days in July:
22.3 days - Average rainfall days in August:
20.3 days - Average rainfall days in September:
17.2 days - Average rainfall days in October:
18.2 days - Average rainfall days in November:
21.5 days - Average rainfall days in December:
26.2 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 / Average sunshine
Stone Town, Tanzania
- Average daylight in January:
12h and 24min - Average daylight in February:
12h and 18min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 0min - Average daylight in May:
11h and 48min - Average daylight in June:
11h and 48min
- Average daylight in July:
11h and 48min - Average daylight in August:
11h and 54min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 12min - Average daylight in November:
12h and 24min - Average daylight in December:
12h and 30min
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 30min - Average sunshine in February:
8h and 24min - Average sunshine in March:
8h and 48min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 6min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
8h and 42min - Average sunshine in August:
8h and 42min - Average sunshine in September:
8h and 42min - Average sunshine in October:
8h and 48min - Average sunshine in November:
10h and 42min - Average sunshine in December:
9h and 12min
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
Stone Town, Tanzania
- Average sunshine days in January:
7.8 days - Average sunshine days in February:
7.9 days - Average sunshine days in March:
4.7 days - Average sunshine days in April:
1.7 days - Average sunshine days in May:
2.9 days - Average sunshine days in June:
4.9 days
- Average sunshine days in July:
4.3 days - Average sunshine days in August:
4 days - Average sunshine days in September:
5.9 days - Average sunshine days in October:
7 days - Average sunshine days in November:
5 days - Average sunshine days in December:
3.1 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
Stone Town, Tanzania
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
Stone Town, Tanzania
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
Stone Town, Tanzania
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).
