May weather forecast
Dar es Salaam, Tanzania

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Weather in May

As the calendar turns to May, the city starts to emerge from the wet season with a noticeable reduction in rainfall. A noticeable shift in weather patterns begins to occur. Sea temperatures start to decline, bringing relief to the persistent heat experienced in the earlier months. Meanwhile, the city continues to bask in an average of 8.1 hours of bright sunshine, providing ample opportunities for outdoor pursuits.

Temperature

The shift into May records an average high-temperature of a still moderately hot 28.4°C (83.1°F), subtly varied from April's 29.6°C (85.3°F). The average low-temperature, in May, is a still warm 23.3°C (73.9°F).

Heat index

For most parts of May, the heat index is estimated at a hot 33°C (91.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

In Dar es Salaam, the average relative humidity in May is 80%.

Rainfall

In May, the rain falls for 24.5 days. Throughout May, 102mm (4.02") of precipitation is accumulated. In Dar es Salaam, during the entire year, the rain falls for 255.3 days and collects up to 734mm (28.9") of precipitation.

Sea temperature

In Dar es Salaam, in May, the average water temperature is 28.3°C (82.9°F).
Note: Surface water temperatures falling between 25°C (77°F) and 29°C (84.2°F) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

In May, the average length of the day is 11h and 49min.
On the first day of May in Dar es Salaam, Tanzania, sunrise is at 06:24 and sunset at 18:16. On the last day of the month, sunrise is at 06:28 and sunset at 18:13 EAT.

Sunshine

In Dar es Salaam, the average sunshine in May is 8.1h.

UV index

April through November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 in May translates into this advice:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Attention! The reflection of both water and sand can increase the intensity of UV rays.

Frequently asked questions

How hot is May?

The average high-temperature and low-temperature during May are 28.4°C (83.1°F) and 23.3°C (73.9°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in May is estimated at 33°C (91.4°F).

What is the average humidity in May?

The average relative humidity in May is 80%.

How many days does it rain in May?

In Dar es Salaam, Tanzania, in May, during 24.5 rainfall days, 102mm (4.02") of precipitation is typically accumulated.

What is the sea water temperature in May?

In Dar es Salaam, the average seawater temperature in May is 28.3°C (82.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Dar es Salaam have in May?

In May, the average day length is 11h and 49min.

What time are sunrise and sunset in May in Dar es Salaam?

In May, on the first day of the month, sunrise is at 06:24 and sunset at 18:16. On the last day of the month, sunrise is at 06:28 and sunset at 18:13 EAT.

How long on average sun shines in May?

The average sunshine duration in May is 8.1h.

What are the months with the lowest UV index?

The months with the lowest UV index are April through November, with an average maximum UV index of 6.

What is the UV index reading in May in Dar es Salaam?

The average daily maximum UV index in May in Dar es Salaam, Tanzania, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Average temperature in May
Dar es Salaam, Tanzania

Average temperature in May - Dar es Salaam, Tanzania
  • Average high temperature in May: 28.4°C

The warmest months (with the highest average high temperature) are February and March (30.9°C).
The month with the lowest average high temperature is July (27.6°C).

  • Average low temperature in May: 23.3°C

The months with the highest average low temperature are January and February (25.3°C).
The coldest month (with the lowest average low temperature) is July (21.3°C).

Average pressure in May
Dar es Salaam, Tanzania

Average pressure in May - Dar es Salaam, Tanzania
  • Average pressure in May: 1014.1mbar

The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is February (1010mbar).

Average wind speed in May
Dar es Salaam, Tanzania

Average wind speed in May - Dar es Salaam, Tanzania
  • Average wind speed in May: 14.6km/h

The windiest month (with the highest average wind speed) is July (15.6km/h).
The calmest month (with the lowest average wind speed) is March (9.5km/h).

Average humidity in May
Dar es Salaam, Tanzania

Average humidity in May - Dar es Salaam, Tanzania
  • Average humidity in May: 80%

The month with the highest relative humidity is April (81%).
The months with the lowest relative humidity are July, August and September (75%).

Average rainfall in May
Dar es Salaam, Tanzania

Average rainfall in May - Dar es Salaam, Tanzania
  • Average rainfall in May: 102mm

The wettest month (with the highest rainfall) is April (154mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days in May
Dar es Salaam, Tanzania

Average rainfall days in May - Dar es Salaam, Tanzania
  • Average rainfall days in May: 24.5 days

The month with the highest number of rainy days is April (26.4 days).
The month with the least rainy days is June (17.5 days).

Average sea temperature in May
Dar es Salaam, Tanzania

Average sea temperature in May - Dar es Salaam, Tanzania
  • Average sea temperature in May: 28.3°C

The best months for swimming (with the highest average sea temperature) are March and April (29.2°C).
The coldest month (with the lowest average sea temperature) is August (25.7°C).

Average daylight in May /
Average sunshine in May
Dar es Salaam, Tanzania

Average daylight in May / Average sunshine in May - Dar es Salaam, Tanzania
  • Average daylight in May: 11h and 5min

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 42min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is November (Average sunshine: 10h and 30min).
The month with the least sunshine is April (Average sunshine: 8h and 0min).

Average sunshine days in May
Dar es Salaam, Tanzania

Average sunshine days in May - Dar es Salaam, Tanzania
  • Average sunshine days in May: 4.5 days

The month with the most sunshine days is June (7.8 days).
The month with the least sunshine days is April (2.6 days).

Average UV index in May
Dar es Salaam, Tanzania

Average UV index in May - Dar es Salaam, Tanzania
  • Average UV index in May: 6

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

Average cloud cover in May
Dar es Salaam, Tanzania

Average cloud cover in May - Dar es Salaam, Tanzania
  • Average cloud cover in May: 37

The month with the most cloud cover is April (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in May
Dar es Salaam, Tanzania

Average visibility in May - Dar es Salaam, Tanzania
  • Average visibility in May: 10km

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

Dar es Salaam, Tanzania

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