Monthly weather averages & travel planning

Asia › 🇮🇩 Indonesia › Bali
Updated: March 2026
January is a fair time to visit Bali (5/10). With 9 daily sunshine hours and only 29 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 11th sunniest of the year in Bali. Culture-focused travellers and those who prefer lighter crowds will find January a practical choice, with prices running lower than peak September without sacrificing all the good weather. February offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 29 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. 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.
January sits at a particular moment in Bali's seasonal arc. Temperatures average 28°C during the day, placing this month in the warmer half of the year, when the city operates at full summer intensity. Against the seasonal backdrop, 29 rainy days and 9 sunshine hours per day help calibrate expectations for what actually awaits on the ground.
28°C
82°F
Avg High
25°C
77°F
Avg Low
29 days
382 mm total
Rain Days
9h
per day avg
Sunshine
82%
Humid
Humidity
The narrow 3°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 28°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. Winds are calm at an average 12 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 82°F average high, 77°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Bali in January means dressing for 28°C days and 25°C evenings. A light cotton tee with a casual overshirt works well at 28°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 25°C, a modest 3°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 29 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Bali's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
January has no major festivals or public holidays in Bali, 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 28°C average highs and 29 rainy days
Bali's January 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 28°C, moderated slightly by afternoon convective showers. Overnight temperatures remain warm at 25°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.
Bali in January
January ranks 11th sunniest of the year in Bali, with an average 9 daily sunshine hours. The driest months are August, September, and July. January is the hottest month (28°C avg high); July is the coolest (26°C). From here, temperatures fall 0°C into February. Compared to last month (December: 28°C high, 28 rain days), January is similarly warm and wetter. January is one of the least sunny months, but that often means lower prices and fewer fellow tourists.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 28°C | 25°C | 29 | 9h | View |
| February | 28°C | 25°C | 27 | 9h | View |
| March | 28°C | 25°C | 28 | 10h | View |
| April | 28°C | 25°C | 24 | 10h | View |
| May | 28°C | 25°C | 18 | 11h | View |
| June | 27°C | 24°C | 14 | 11h | View |
| July | 26°C | 23°C | 12 | 11h | View |
| August | 26°C | 23°C | 10 | 11h | View |
| September | 27°C | 23°C | 11 | 12h | View |
| October | 28°C | 24°C | 17 | 12h | View |
| November | 28°C | 24°C | 23 | 11h | View |
| December | 28°C | 25°C | 28 | 10h | View |
January
29 rain days, 9h sun
February
27 rain days, 9h sun
March
28 rain days, 10h sun
April
24 rain days, 10h sun
May
18 rain days, 11h sun
June
14 rain days, 11h sun
July
12 rain days, 11h sun
August
10 rain days, 11h sun
September
11 rain days, 12h sun
October
17 rain days, 12h sun
November
23 rain days, 11h sun
December
28 rain days, 10h sun
Data Sources for Bali
Climate normals represent 30-year averages (1991-2020). Individual years may vary.