May Weather in Zanzibar, Tanzania

Last updated: August 28, 2025

In Zanzibar, Tanzania, May ushers in warm, tropical weather characterized by a maximum temperature of 30°C (87°F) and an average temperature of 26°C (79°F). The minimum temperature hovers around 23°C (74°F), creating a balmy atmosphere ideal for relaxation. However, travelers should be prepared for significant precipitation, with an average of 225 mm (8.8 in) over 22 days, resulting in high humidity levels of 86%. This combination of warmth and moisture provides a lush backdrop, making May a unique time to experience the vibrant flora and captivating scenery of this enchanting island.

May Temperature in Zanzibar

As May unfolds in Zanzibar, Tanzania, the island experiences a delightful transition in temperatures. With minimums settling around 23°C (74°F) and maximums peaking at 30°C (87°F), the weather becomes more comfortable compared to the preceding months. The average temperature dips slightly to 26°C (79°F), marking a notable shift toward the cooler side of the tropical spectrum. This month also signals the end of the hotter season, as temperatures gradually ease from the warmth of April while still maintaining an inviting environment perfect for exploration. Whether you're lounging on the beach or wandering through the vibrant streets, May offers a balanced climate that enhances Zanzibar's enchanting charm.

May Weather in Zanzibar: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Zanzibar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zanzibar, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec838383817978777778808182
Data source: Temperature data for Zanzibar generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Zanzibar

In Zanzibar, Tanzania, May marks a significant transition within the rainy season, characterized by a substantial precipitation amount of 225 mm (8.8 in), which occurs over approximately 22 rainy days. This is a notable decrease from April's peak of 276 mm (10.8 in), yet still represents one of the wetter months of the year. The gradual decline in rainfall during May suggests a shift towards more moderate weather patterns as the island moves into the drier season ahead. With lush landscapes nourished by the abundant rains, May is a beautiful time to experience the vibrant greenery of Zanzibar, even as the skies often linger in a mosaic of clouds and sun.

May Precipitation Trends in Zanzibar

The chart displays monthly precipitation patterns in Zanzibar, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Zanzibar, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec52591332762254531333692112137
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Zanzibar

In Zanzibar, Tanzania, the month of May brings a noticeable rise in humidity, peaking at an impressive 86%. This increase marks the culmination of a gradual upward trend that begins after the cooler and drier months. Following a slight dip to 76% in March, humidity steadily climbs, with April seeing a moderate 79%, before soaring in May. This spike signals the onset of the wet season, characterized by lush landscapes and vibrant natural beauty. As the year progresses into June with an 84% humidity level, it remains high, albeit slightly lower than May. Overall, May stands out as a key transitional month, preparing both the climate and the island for the rich rains that lie ahead.

May Average Humidity in Zanzibar

This chart illustrates the average monthly humidity levels in Zanzibar, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Zanzibar is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%78%76%79%86%84%80%74%73%75%84%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Zanzibar

In May, Zanzibar's UV Index remains notably high at 12, classified as extreme, which means that sun exposure can lead to skin damage in as little as 10 minutes. This trend of extreme UV levels is consistent from January through April, where the UV Index peaks at 14. Though there is a slight decrease in May, the danger from UV rays persists, highlighting the importance of sun protection when enjoying the island's stunning beaches. As the months progress towards June, the UV Index drops to 10, indicating a shift to a very high category with an extended burn time of 15 minutes. For those planning their outdoor activities, it's essential to stay informed about the UV Index; visit Zanzibar UV Index for detailed updates.

Maximum UV Index Levels in Zanzibar for May

The chart shows the monthly maximum UV Index (UVI) for Zanzibar in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Zanzibar typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141414141210101213131313
Data source: Zanzibar May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Zanzibar

In May, Zanzibar basks in an impressive 304 hours of sunshine, continuing a delightful trend of bright days that began earlier in the year. While April dipped slightly with 285 hours, the sun reasserts its presence, promising more enjoyable outdoor experiences. As the months progress, sunshine duration steadily increases, peaking in the later half of the year with July and beyond showcasing a stunning 338 to 354 hours. This makes May an ideal time for visitors to relish the island's vibrant landscapes before the dazzling sunshine reaches its annual zenith, blending warm breezes with the allure of stunning coastal views and cultural richness.

Monthly Sunshine Duration in Zanzibar: May Highlighted

The May sunshine duration represents the total number of hours Zanzibar experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec288h316h330h285h304h325h338h347h342h348h342h354h
Data source: Zanzibar May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zanzibar During May

May in Zanzibar, Tanzania offers a moderate chance of sun at 44%, providing a delightful balance between warm days and the onset of the rainy season. As we transition from April's lower likelihood of 24%, May shows a promising uptick in sunshine, hinting at the lingering beauty before the heavier rains arrive. Following May, the likelihood of sunny weather continues to improve, peaking in the dry months of August and September, which enjoy 58% and 62% sun likelihood, respectively. Overall, while May may not guarantee beach-perfect days, it certainly invites visitors to experience the island's lush landscapes under a mix of bright skies and refreshing showers.

Percentage of Sunny Days in May in Zanzibar

The chart illustrates the percentage of sunny days in Zanzibar throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Zanzibar experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec47%31%52%24%44%50%51%58%62%67%66%48%
Data source: Zanzibar May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zanzibar in May

In Zanzibar, Tanzania, the daylight duration remains relatively stable throughout the year, showcasing the region's tropical climate. From January to March, the islands bask in 12 hours of sunlight daily, providing ample light for exploration and relaxation. As April arrives, daylight begins to wane slightly, dropping to 11 hours, a trend that continues through May, June, July, and August. This shorter daylight period creates a cozy ambiance, perfect for enjoying the balmy evenings. As the seasons transition into September, October, and November, daylight gradually returns to 12 hours, culminating in a steady rhythm that lends itself beautifully to the enchanting allure of this paradise. Overall, Zanzibar's daylight distribution reflects a gentle ebb and flow, inviting visitors to revel in its natural beauty year-round.

Average Daylight Hours in Zanzibar for May

The chart illustrates the variation in daylight duration in Zanzibar throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 25m12h 17m12h 7m11h 57m11h 49m11h 45m11h 47m11h 54m12h 3m12h 13m12h 22m12h 27m
Data source: Zanzibar daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Zanzibar

In Zanzibar during May, the winds pick up slightly, averaging about 4.3 m/s (10 mph), which is a welcome shift after the relatively calm conditions of earlier months. This trend showcases a subtle increase in wind speed as the region transitions into the drier season. Following a similar pattern, June maintains this momentum with a slight increase to 4.4 m/s, and July escalates to 5.1 m/s (12 mph), marking the peak of wind activity in the mid-year. As the months progress towards the end of the year, however, a gradual decline is observed, bringing winds down to their calmest in December at 2.7 m/s (6 mph). Overall, May stands out as a pivotal month, bridging the shift to more vigorous breezes that characterize the following season.

Average May Wind Speed in Zanzibar

The chart displays monthly wind speed patterns in Zanzibar, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.64.03.34.24.3 m/s4.45.13.73.83.33.12.7
Data source: Zanzibar May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Zanzibar Compares to Other Months

Weather in Zanzibar varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Zanzibar, focusing on differences in temperature, rainfall, humidity, and UV levels.

In May, temperatures in Zanzibar typically range from a minimum of 23°C (74°F) to a maximum of 30°C (87°F), averaging around 26°C (79°F). This month experiences significant rainfall, with 225 mm (8.8 in) spread over about 22 days, leading to high humidity levels of around 86%. In contrast, January's weather is slightly warmer, with minimum temperatures of 25°C (77°F) and maximums reaching 33°C (91°F), averaging 28°C (83°F). However, January sees much less precipitation, with only 52 mm (2.0 in) occurring over about 13 days and humidity levels slightly lower at 82%. For more detailed insights, you can check Zanzibar weather in January.

When comparing the weather in May and February, May tends to be slightly cooler, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 30°C (87°F). In contrast, February experiences warmer weather, with a minimum of 25°C (78°F) and a maximum that reaches up to 33°C (91°F). However, May sees significantly more precipitation, averaging 225 mm (8.8 in) over 22 rainy days, while February has much less rain, with only 59 mm (2.3 in) across 13 days. Additionally, May has higher humidity levels at 86%, compared to February's 78%. For more detailed information, check out Zanzibar weather in February.

When comparing the weather in May and March, we can observe some notable differences. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 30°C (87°F), with an average of 26°C (79°F). This month experiences significant rainfall, with 225 mm (8.8 in) of precipitation spread over 22 days and humidity levels at a high 86%. In contrast, March is slightly warmer, featuring a minimum temperature of 25°C (77°F) and peaking at 33°C (92°F), with an average of 28°C (83°F). Rainfall is less frequent in March, accumulating to 133 mm (5.2 in) across 20 days and a lower humidity of 76%. If you're interested in more detailed information, check out Zanzibar weather in March.

In comparing the weather between April and May, we see notable differences in both temperature and precipitation patterns. April boasts slightly higher temperatures, with a minimum of 24°C (75°F) and a peak maximum of 33°C (92°F), while May's temperatures range from a minimum of 23°C (74°F) to a maximum of 30°C (87°F). However, while April experiences about 276 mm (10.8 in) of rainfall over 28 days, May sees a decrease in precipitation to 225 mm (8.8 in) spread across 22 days. Humidity levels are also higher in May at 86%, compared to April's 79%, contributing to a more humid atmosphere as the month progresses. For a detailed look at April's weather specifics, visit Zanzibar weather in April.

When comparing the weather in May and June, it’s evident that while both months have similar temperature ranges, significant differences in precipitation and humidity stand out. May experiences warmer temperatures with a minimum of 23°C (74°F) and a maximum of 30°C (87°F), along with high humidity levels at 86% and substantial rainfall totaling 225 mm (8.8 in) over 22 days. In contrast, June offers slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 30°C (86°F). This month is much drier, with only 45 mm (1.8 in) of rain over 12 days and a slight decrease in humidity to 84%. For more detailed information about the weather conditions in June, check out Zanzibar weather in June.

In comparing the weather between May and July, May tends to be warmer and much wetter. With temperatures ranging from a minimum of 23°C (74°F) to a maximum of 30°C (87°F) and average humidity at 86%, May experiences a more tropical climate. Additionally, it sees substantial rainfall with precipitation measuring 225 mm (8.8 in) over 22 days. In contrast, July has slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 29°C (85°F), and average humidity dropping to 80%. The month is much drier, with just 31 mm (1.2 in) of precipitation over only 10 days. For more details, check out Zanzibar weather in July.

In comparing the weather of May and August, May tends to be warmer and significantly wetter. With average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 30°C (87°F), May experiences a higher average temperature of 26°C (79°F) compared to August’s lower average of 25°C (78°F). Additionally, May sees a substantial amount of rainfall, with 225 mm (8.8 in) over 22 days, while August has a much drier climate with only 33 mm (1.3 in) over 11 days. Moreover, humidity levels are notably higher in May at 86%, compared to 74% in August. For more detailed information, you can check Zanzibar weather in August.

In May, the weather tends to be warmer and more humid compared to September. With temperatures ranging from a minimum of 23°C (74°F) to a maximum of 30°C (87°F), May experiences an average temperature similar to September, which also ranges from 22°C (72°F) to 30°C (86°F). However, May sees significant rainfall, with 225 mm (8.8 inches) over approximately 22 days, contributing to a high humidity level of 86%. In contrast, September enjoys much drier weather with just 35 mm (1.4 inches) of precipitation over 14 days and a decreased humidity of 73%. This makes September a more comfortable month for outdoor activities. For more detailed information on September weather, you can check Zanzibar weather in September.

May and October in Zanzibar exhibit similar minimum and average temperatures, both hovering around 23°C (73°F) and 26°C (79°F) respectively. However, October tends to be slightly warmer at its maximum, reaching 31°C (88°F) compared to May's 30°C (87°F). One notable difference is the precipitation; May experiences significantly higher rainfall with 225 mm (8.8 in) across 22 days, while October sees much less with only 92 mm (3.6 in) over 16 days. Additionally, humidity levels are higher in May at 86%, contrasting with October's more comfortable 75%. For more details on October weather, you can check Zanzibar weather in October.

In comparing the weather between May and November, both months exhibit warm temperatures typical of a tropical climate, with November slightly warmer overall. May presents a minimum temperature of 23°C (74°F) and an average of 26°C (79°F), peaking at 30°C (87°F), accompanied by significant rainfall totaling 225 mm (8.8 in) over 22 days and high humidity at 86%. In contrast, November experiences a minimum temperature of 24°C (75°F), an average of 27°C (81°F), and a maximum of 32°C (90°F). Precipitation during November is less intense, totaling 112 mm (4.4 in), also over 22 days, with humidity slightly lower at 84%. For more specifics on November weather patterns, you can check Zanzibar weather in November.

In comparing the weather between May and December, both months exhibit warm temperatures, with December having slightly higher averages and maximums. May features a minimum temperature of 23°C (74°F), an average of 26°C (79°F), and a maximum of 30°C (87°F), while December presents a minimum of 24°C (76°F), an average of 28°C (83°F), and a maximum of 31°C (89°F). Rainfall in May is significantly higher, at 225 mm (8.8 in) over 22 days, compared to December's 137 mm (5.4 in) across 26 days. Humidity remains relatively stable, with May hovering around 86% and December slightly lower at 85%. For more specifics on December weather in Zanzibar, you can check Zanzibar weather in December.

Compare Zanzibar's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Zanzibar

As May rolls in, Zanzibar transforms under the sway of its distinctive weather patterns. With temperatures averaging a comfortable 26°C (79°F) and a notable rise in humidity at 86%, the island feels more tropical than ever. However, the most defining feature of May is the increased rainfall, with precipitation occurring on about 22 days, leading to a total of 225 mm (8.8 in) for the month. This is a significant contrast to the drier months preceding it, making May a lush, green paradise ideal for those who appreciate the vibrant beauty of nature. While the occasional downpour may interrupt outdoor plans, the warmer temperatures and the refreshing rain contribute to Zanzibar's enchanting allure. For more insights on the island's climate, visit Zanzibar Climate.