Several human studies have measured the effects of melatonin supplements on sleep in healthy people. A wide range of doses has been used, often taken by mouth 30 to 60 minutes prior to sleep time. Results have been mixed. Some evidence suggests that melatonin may work best for people over 55 who have insomnia.
Dar es Salaam, the largest city and former capital of Tanzania, is located on the coast, in the area with two rainy seasons, and is hot all year round, with a slightly hotter and wetter period from November to April, when daytime temperatures are around 31/32 Â°C (88/90 Â°F), but with peaks of 35/36 Â°C (95/97 Â°F), and relative humidity is high, especially in March and April, the rainiest months.
Zanzibar: Weather Forecast. The warmest day over the next 7 days in Zanzibar is forecast to be 17th April at 31Â°C (88Â°F) and the warmest night on 17th April at 26Â°C (79Â°F). The average temperature over the next 7 days is forecast to be 30Â°C (86Â°F) . The average for April is 26Â°C (79Â°F) in Zanzibar.