Monthly weather averages & travel planning

Africa › 🇹🇿 Tanzania › Zanzibar
Updated: March 2026
October is a fair time to visit Zanzibar (5/10). With 12 daily sunshine hours and only 11 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 2nd sunniest of the year in Zanzibar. Culture-focused travellers and those who prefer lighter crowds will find October a practical choice, with prices running lower than peak January without sacrificing all the good weather. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Zanzibar's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Visiting Zanzibar in October means warm daytime temperatures peaking at 29°C. Factor in 11 potential rainy days and 82% average humidity when planning your daily activities.
29°C
84°F
Avg High
24°C
75°F
Avg Low
11 days
59 mm total
Rain Days
12h
per day avg
Sunshine
82%
Humid
Humidity
The narrow 5°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 82% humidity, the 29°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 18 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 84°F average high, 75°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Zanzibar in October means dressing for 29°C days and 24°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 29°C daytime heat. Evening temperatures settle at 24°C, a modest 5°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. A compact foldable umbrella weighs almost nothing and earns its keep across 11 potential rainy days. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Layers are more practical than a single heavy garment in Zanzibar. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
October has no major festivals or public holidays in Zanzibar, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 29°C average highs and 11 rainy days
In October, Zanzibar sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 29°C, with lower humidity than the wet months. Overnight lows of 24°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Zanzibar in October
October ranks 2nd sunniest of the year in Zanzibar, with an average 12 daily sunshine hours. The driest months are August, September, and February. February is the hottest month (31°C avg high); June is the coolest (27°C). From here, temperatures fall 0°C into November. Compared to last month (September: 29°C high, 7 rain days), October is similarly warm and wetter. October is among the top three sunniest months to visit Zanzibar.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 30°C | 26°C | 10 | 12h | View |
| February | 31°C | 26°C | 8 | 11h | View |
| March | 30°C | 26°C | 22 | 10h | View |
| April | 29°C | 25°C | 25 | 10h | View |
| May | 28°C | 24°C | 20 | 10h | View |
| June | 27°C | 23°C | 11 | 11h | View |
| July | 27°C | 23°C | 8 | 11h | View |
| August | 28°C | 22°C | 7 | 11h | View |
| September | 29°C | 23°C | 7 | 11h | View |
| October | 29°C | 24°C | 11 | 12h | View |
| November | 29°C | 25°C | 18 | 12h | View |
| December | 30°C | 25°C | 20 | 12h | View |
January
10 rain days, 12h sun
February
8 rain days, 11h sun
March
22 rain days, 10h sun
April
25 rain days, 10h sun
May
20 rain days, 10h sun
June
11 rain days, 11h sun
July
8 rain days, 11h sun
August
7 rain days, 11h sun
September
7 rain days, 11h sun
October
11 rain days, 12h sun
November
18 rain days, 12h sun
December
20 rain days, 12h sun
Data Sources for Zanzibar
Climate normals represent 30-year averages (1991-2020). Individual years may vary.