Best time to visit Haikou: month-by-month weather (2026)
The highest-scoring months in Haikou are Jan, Feb, Mar and Dec.
Best months
Jan, Feb, Mar and Dec
Peak season
Jan, Feb, Mar, Aug and Dec
Off season
Jun, Jul and Oct
Monthly Temperatures (°C)
Monthly Rainfall (mm)
Month-by-Month Guide
Temperature, rainfall and sunshine are measured. The visit score below is derived from those three (design spec §5.3)estimate.
Jan
BestTemp: 16.2°C – 21.1°C
Rain: 48mm
Sunshine: 6.8h/day
Visit score: 8.7/10
Feb
BestTemp: 18°C – 23.8°C
Rain: 35mm
Sunshine: 6.7h/day
Visit score: 9.6/10
Mar
BestTemp: 19.6°C – 27.2°C
Rain: 58mm
Sunshine: 8.3h/day
Visit score: 9.1/10
Apr
Temp: 23.7°C – 32.1°C
Rain: 97mm
Sunshine: 10.4h/day
Visit score: 6.7/10
May
Temp: 25°C – 31.5°C
Rain: 290mm
Sunshine: 10.2h/day
Visit score: 5.8/10
Jun
Temp: 26°C – 32.5°C
Rain: 299mm
Sunshine: 10.4h/day
Visit score: 3.8/10
Jul
Temp: 26°C – 32.3°C
Rain: 285mm
Sunshine: 10.9h/day
Visit score: 3.8/10
Aug
Temp: 25.8°C – 32.1°C
Rain: 258mm
Sunshine: 9.7h/day
Visit score: 5.8/10
Sep
Temp: 24.9°C – 30.4°C
Rain: 403mm
Sunshine: 8.4h/day
Visit score: 5.8/10
Oct
Temp: 23.9°C – 28.2°C
Rain: 323mm
Sunshine: 7.6h/day
Visit score: 5.6/10
Nov
Temp: 21.3°C – 25.3°C
Rain: 96mm
Sunshine: 8.1h/day
Visit score: 8.1/10
Dec
BestTemp: 18.6°C – 22.8°C
Rain: 27mm
Sunshine: 7.1h/day
Visit score: 9.7/10
When to go, and when not to
The strongest months to visit are January, February, March, and December, when daytime highs range from about 21C to 27C and overnight lows stay mild, between roughly 16C and 20C. Rainfall in these months is comparatively light, from 27mm in December up to 58mm in March, and sunshine hours are moderate, making outdoor activity more comfortable than later in the year.
The trade-off is that January through March and December also fall within the city's peak season, alongside August, so popular sites and services may be busier. Travelers seeking lower prices and fewer crowds can look to June, July, and October, though these months bring some of the heaviest rain, with totals reaching 299mm in June and 323mm in October, plus high temperatures near 32C to 33C in June and July.
Season Guide
Spring
March – May
Mild temperatures and blooming gardens. A great time for sightseeing with fewer crowds than summer.
Packing tips
- · Light layers
- · Rain jacket
- · Comfortable walking shoes
Summer
June – August
Warmest months with the longest days. Peak tourist season in most destinations.
Packing tips
- · Sunscreen
- · Hat
- · Light clothing
- · Refillable water bottle
Autumn
September – November
Cooling temperatures and autumn foliage. Shoulder season with good deals on accommodations.
Packing tips
- · Medium layers
- · Sweater
- · Waterproof jacket
Winter
December – February
Coldest months with shorter days. Holiday markets and winter activities in many cities.
Packing tips
- · Warm coat
- · Scarf and gloves
- · Thermal layers
- · Waterproof boots
Keep reading
Sources
- GeoNames city database — CC BY 4.0, fetched September 14, 2026
- Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026
AI-written interpretation reviewed against the data above — claude-sonnet-5, generated September 21, 2026. Every number on this page comes from a dataset named here; the formulas are public.