Monthly weather averages & travel planning

Asia › 🇹🇼 Taiwan › Taipei
Updated: March 2026
May is a fair time to visit Taipei (4/10). With 8 daily sunshine hours and only 20 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Taipei. May suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 20 potential rain days. June offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 20 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
Taipei in May rewards travelers with average highs of 27°C and overnight lows around 22°C. Expect around 20 rainy days, so a compact umbrella is worth carrying. With 8 daily sunshine hours on average, conditions are warm and inviting for outdoor exploration.
27°C
81°F
Avg High
22°C
72°F
Avg Low
20 days
204 mm total
Rain Days
8h
per day avg
Sunshine
70%
Moderate
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. Humidity averages 70%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 9 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: 81°F average high, 72°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Taipei in May means dressing for 27°C days and 22°C evenings. A light cotton tee with a casual overshirt works well at 27°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 22°C, a modest 5°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 20 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.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Taipei's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
May has no major festivals or public holidays in Taipei, 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 27°C average highs and 20 rainy days
Taipei's May heat is driven by the Asian summer monsoon system, as the low-pressure cell that forms over the heated landmass draws warm, humid air from the oceans. The result is temperatures averaging 27°C with high moisture in the air. Overnight temperatures remain elevated at 22°C, as clouds and humidity prevent the earth from radiating heat away after sunset. 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.
Taipei in May
May ranks 6th sunniest of the year in Taipei, with an average 8 daily sunshine hours. The driest months are February, January, and March. July is the hottest month (31°C avg high); January is the coolest (18°C). From here, temperatures rise 3°C into June. Compared to last month (April: 25°C high, 16 rain days), May is warmer and wetter. May sits in the middle of the annual sunshine ranking for Taipei, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 18°C | 14°C | 14 | 5h | View |
| February | 19°C | 14°C | 13 | 5h | View |
| March | 21°C | 16°C | 14 | 7h | View |
| April | 25°C | 19°C | 16 | 8h | View |
| May | 27°C | 22°C | 20 | 8h | View |
| June | 30°C | 25°C | 21 | 9h | View |
| July | 31°C | 26°C | 19 | 11h | View |
| August | 31°C | 26°C | 21 | 10h | View |
| September | 29°C | 24°C | 16 | 9h | View |
| October | 26°C | 22°C | 16 | 7h | View |
| November | 23°C | 19°C | 15 | 6h | View |
| December | 19°C | 15°C | 15 | 5h | View |
January
14 rain days, 5h sun
February
13 rain days, 5h sun
March
14 rain days, 7h sun
April
16 rain days, 8h sun
May
20 rain days, 8h sun
June
21 rain days, 9h sun
July
19 rain days, 11h sun
August
21 rain days, 10h sun
September
16 rain days, 9h sun
October
16 rain days, 7h sun
November
15 rain days, 6h sun
December
15 rain days, 5h sun
Data Sources for Taipei
Climate normals represent 30-year averages (1991-2020). Individual years may vary.