Best time to visit Tainan
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Similar climatesKaohsiung95% · Taichung87% · Orlando86%
Other destinations with the most-alike year-round climate to Tainan (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Tainan's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 14–23 | 22 | 3 | 32 | 10.7 | 58% | 22 | 217 | 5 | Quiet | 10 |
| Feb | 15–25 | 24 | 5 | 34 | 6.8 | 59% | 22 | 213 | 7 | Quiet | 9 |
| Mar | 17–27 | 27 | 6 | 47 | 7.8 | 58% | 21 | 245 | 7 | Quiet | 9 |
| Apr | 21–29 | 30 | 5 | 63 | 12.6 | 60% | 21 | 244 | 8 | Quiet | 7 |
| May | 24–30 | 34 | 15 | 196 | 13.1 | 69% | 18 | 222 | 7 | Quiet | 3 |
| Jun | 26–31 | 36 | 21 | 255 | 12.1 | 75% | 17 | 231 | 8 | Quiet | 1 |
| Jul | 26–32 | 37 | 21 | 242 | 11.5 | 72% | 18 | 246 | 8 | Quiet | 1 |
| Aug | 26–31 | 36 | 25 | 323 | 12.9 | 77% | 16 | 221 | 8 | Moderate | 1 |
| Sep | 25–31 | 36 | 19 | 214 | 11.3 | 72% | 16 | 235 | 7 | Moderate | 2 |
| Oct | 23–30 | 33 | 9 | 113 | 12.6 | 67% | 18 | 226 | 6 | Quiet | 4 |
| Nov | 20–28 | 30 | 3 | 36 | 12.0 | 65% | 19 | 216 | 5 | Peak | 8 |
| Dec | 16–25 | 24 | 3 | 39 | 13.0 | 59% | 22 | 199 | 5 | Peak | 9 |
UV Index in Tainan by Month
UV index in Tainan peaks at 8 (very high) in June, dropping to 5 (moderate) in December. June, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
Best months in detail
January
10/1014–23°C (feels 22°C) · 3 rain days (32h) · 217 sun hours · 58% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
December
9/1016–25°C · 3 rain days (39h) · 199 sun hours · 59% humidity · Peak crowd · UV 5 (moderate)
February
9/1015–25°C · 5 rain days (34h) · 213 sun hours · 59% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)
Every month
Show the other 9 months in detail
March
9/1017–27°C · 6 rain days (47h) · 245 sun hours · 58% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 10 (very high)
April
7/1021–29°C (feels 30°C) · 5 rain days (63h) · 244 sun hours · 60% humidity · Quiet crowd · UV 8 (high) · sunniest 1 in 10 days reach 11 (very high)
May
3/1024–30°C (feels 34°C) · 15 rain days (196h) · 222 sun hours · 69% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 10 (very high)
June
1/1026–31°C (feels 36°C) · 21 rain days (255h) · 231 sun hours · 75% humidity · Quiet crowd · UV 8 (very high) · sunniest 1 in 10 days reach 11 (very high)
July
1/1026–32°C (feels 37°C) · 21 rain days (242h) · 246 sun hours · 72% humidity · Quiet crowd · UV 8 (high) · sunniest 1 in 10 days reach 11 (very high)
August
1/1026–31°C (feels 36°C) · 25 rain days (323h) · 221 sun hours · 77% humidity · Moderate crowd · UV 8 (very high) · sunniest 1 in 10 days reach 11 (very high)
September
2/1025–31°C (feels 36°C) · 19 rain days (214h) · 235 sun hours · 72% humidity · Moderate crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
October
4/1023–30°C (feels 33°C) · 9 rain days (113h) · 226 sun hours · 67% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (high)
November
8/1020–28°C (feels 30°C) · 3 rain days (36h) · 216 sun hours · 65% humidity · Peak crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
Frequently asked questions about visiting Tainan
When is the best time to visit Tainan?
January is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 14–23°C (3 rainy days). The top three months by score are January, December, February.
What is the worst time to visit Tainan?
August is the lowest-scoring month (1/10, capped by extreme heat). Typical conditions: 26–31°C (25 rainy days).
Is Tainan too hot in summer?
8 months (April, May, June, July, August, September, October, November) trip the heat deal-breaker in our scoring: apparent temperature crosses the comfort cap, so even with clear skies and low rain the score is held down. Plan around it if heat tolerance is low.
When are crowds lowest in Tainan?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Tainan have good weather but fewer tourists?
January (climate 10/10, crowd index 0) and February (climate 9/10, crowd index 3) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Tainan by month?
UV peaks at 8 (very high) in June and is lowest in December at 5 (moderate). Monthly peak values: Jan 5, Feb 7, Mar 7, Apr 8, May 7, Jun 8, Jul 8, Aug 8, Sep 7, Oct 6, Nov 5, Dec 5. June, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
What is the UV index in Tainan in June?
June is the peak UV month in Tainan, with a daily-peak UV index of 8 (very high). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).
How high can UV get in Tainan on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 8 (high), but the top 10% of days reach UV 11 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: January, February, March, April, May, June, July, August, September, October, November. Plan sun protection for the worst case, not the average.
Is air quality in Tainan bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 12 months: January, February, March, April, May, June, July, August, September, October, November, December. The worst month is March with a typical-day mean of 32 µg/m³ (unhealthy); on the worst 10% of days PM2.5 reaches 43 µg/m³ (hazardous) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.