December Zanzibar Weather Forecast is a transitional month: it starts with the tail end of the "short rains" and gradually dries out as the month progresses, leading into the festive season. The weather is consistently hot and humid, but the rain is rarely a washout—typically short, sharp showers rather than all-day downpours.
Temperature and Humidity
Expect very warm conditions throughout. Average daytime highs sit around 30–31°C (86–88°F), with nighttime lows rarely dropping below 25–27°C (77–81°F) . Humidity is high, typically around 75–80%, which makes the heat feel muggy . The sea temperature stays warm, averaging around 28°C (83°F), making swimming and water activities comfortable at any time of day .
Rain: Early vs. Late December
The key nuance for December is the timing. The "short rains" (vuli) are winding down, but early December can still see frequent showers. Some sources note that rain is more likely in the first half of the month, often falling in short bursts during the morning or afternoon, followed by sunshine . As the month progresses - especially after mid-December - conditions generally become drier and more stable, just in time for the holiday season .
Rainfall estimates vary depending on the data source, reflecting the localized nature of tropical showers. Some historical averages suggest roughly 14 rainy days spread across the month, while other climate models indicate a lower daily probability of around 15% . In practical terms, you should expect some rain if you visit in December, but it is unlikely to ruin a whole day.
Sunshine and Daylight
Days are long, with about 12.5 hours of daylight. Sunrise is around 6:00 AM and sunset around 6:30 PM . Cloud cover can be significant, but you will still get plenty of bright, sunny intervals between showers. The UV index is high, so sun protection is essential even on cloudy days.
Practical Takeaways
If you are visiting in December, pack for heat and humidity, and keep a light rain jacket or umbrella handy - especially if your trip falls in the first two weeks. The rain tends to be brief, so you can usually plan around it. By late December, the weather settles into a pattern that is ideal for beach time and outdoor activities, which is why it is a popular (and busier) time to visit .
December Zanzibar Weather Forecast
December Zanzibar Weather Forecast is a transitional month: it starts with the tail end of the "short rains" and gradually dries out as the month progresses, leading into the festive season. The weather is consistently hot and humid, but the rain is rarely a washout—typically short, sharp showers rather than all-day downpours.
Temperature and Humidity
Expect very warm conditions throughout. Average daytime highs sit around 30–31°C (86–88°F), with nighttime lows rarely dropping below 25–27°C (77–81°F) . Humidity is high, typically around 75–80%, which makes the heat feel muggy . The sea temperature stays warm, averaging around 28°C (83°F), making swimming and water activities comfortable at any time of day .
Rain: Early vs. Late December
The key nuance for December is the timing. The "short rains" (vuli) are winding down, but early December can still see frequent showers. Some sources note that rain is more likely in the first half of the month, often falling in short bursts during the morning or afternoon, followed by sunshine . As the month progresses - especially after mid-December - conditions generally become drier and more stable, just in time for the holiday season .
Rainfall estimates vary depending on the data source, reflecting the localized nature of tropical showers. Some historical averages suggest roughly 14 rainy days spread across the month, while other climate models indicate a lower daily probability of around 15% . In practical terms, you should expect some rain if you visit in December, but it is unlikely to ruin a whole day.
Sunshine and Daylight
Days are long, with about 12.5 hours of daylight. Sunrise is around 6:00 AM and sunset around 6:30 PM . Cloud cover can be significant, but you will still get plenty of bright, sunny intervals between showers. The UV index is high, so sun protection is essential even on cloudy days.
Practical Takeaways
If you are visiting in December, pack for heat and humidity, and keep a light rain jacket or umbrella handy - especially if your trip falls in the first two weeks. The rain tends to be brief, so you can usually plan around it. By late December, the weather settles into a pattern that is ideal for beach time and outdoor activities, which is why it is a popular (and busier) time to visit .