Monthly weather averages & travel planning

Africa › 🇰🇪 Kenya › Nairobi
Updated: March 2026
December is a good time to visit Nairobi (6/10). With 11 daily sunshine hours and only 11 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 7th sunniest of the year in Nairobi. Culture-focused travellers and those who prefer lighter crowds will find December a practical choice, with prices running lower than peak February without sacrificing all the good weather. January offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Nairobi'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.
December weather in Nairobi is defined by a daily temperature swing from 14°C at night to 24°C during the afternoon. Humidity averages 82%, and you can count on around 11 sunshine hours each day. That combination makes December warm and lush, though dressing in breathable fabrics keeps things manageable.
24°C
75°F
Avg High
14°C
57°F
Avg Low
11 days
53 mm total
Rain Days
11h
per day avg
Sunshine
82%
Humid
Humidity
The 10°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 82% humidity, the 24°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 8 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 17 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 75°F average high, 57°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Nairobi in December means dressing for 24°C days and 14°C evenings. A light cotton tee with a casual overshirt works well at 24°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 14°C, a modest 10°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. 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 Nairobi. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
December has no major festivals or public holidays in Nairobi, 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 24°C average highs and 11 rainy days
Nairobi's December climate is governed by the Inter-Tropical Convergence Zone (ITCZ), which draws moisture-laden trade winds across the region, producing the characteristic wet season rainfall of warm tropical cities. Daytime heat peaks around 24°C, moderated slightly by afternoon convective showers. Overnight temperatures remain warm at 14°C because the humid air retains heat effectively. 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.
Nairobi in December
December ranks 7th sunniest of the year in Nairobi, with an average 11 daily sunshine hours. The driest months are July, September, and August. February is the hottest month (27°C avg high); June is the coolest (22°C). From here, temperatures rise 2°C into January. Compared to last month (November: 23°C high, 19 rain days), December is warmer and drier. December sits in the middle of the annual sunshine ranking for Nairobi, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 26°C | 14°C | 7 | 11h | View |
| February | 27°C | 15°C | 6 | 12h | View |
| March | 27°C | 16°C | 11 | 11h | View |
| April | 25°C | 16°C | 20 | 11h | View |
| May | 23°C | 15°C | 16 | 10h | View |
| June | 22°C | 14°C | 8 | 9h | View |
| July | 22°C | 12°C | 4 | 8h | View |
| August | 22°C | 13°C | 5 | 9h | View |
| September | 24°C | 13°C | 4 | 10h | View |
| October | 25°C | 15°C | 10 | 11h | View |
| November | 23°C | 15°C | 19 | 11h | View |
| December | 24°C | 14°C | 11 | 11h | View |
January
7 rain days, 11h sun
February
6 rain days, 12h sun
March
11 rain days, 11h sun
April
20 rain days, 11h sun
May
16 rain days, 10h sun
June
8 rain days, 9h sun
July
4 rain days, 8h sun
August
5 rain days, 9h sun
September
4 rain days, 10h sun
October
10 rain days, 11h sun
November
19 rain days, 11h sun
December
11 rain days, 11h sun
Data Sources for Nairobi
Climate normals represent 30-year averages (1991-2020). Individual years may vary.