Weather in Bangkok in October

How October compares

October is the 12th warmest month of the year in Bangkok and ranks 4th of 134 destinations we compare for October - see where else is hot in October. Within Thailand it is 1st of 6 (Thailand in October). Against London's average high of 14.6°C in October, Bangkok is 15.9°C warmer by day and 15.7°C warmer at night.

Daytime and night-time in October

The typical October day in Bangkok peaks at 30.5°C, but that is an average: the warmest 10% of days reach 31.8°C or more. About 100% of days top 25°C and almost every pass 30°C. Nights average 24.1°C; one night in ten drops to 23.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest October day here reached 34.6°C (2004-10-31) and the coldest night 18.4°C (1994-10-25).

Rain in October

Wet (more than 8 rainy days): about 21 days with 1 mm or more, 194 mm in total. Year to year it varies a lot - the wettest October was 2020 with 476 mm, the driest 2004 with 73 mm. Humidity averages 82%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in October

The sea averages 29.3°C - warm enough to swim (22°c+). Depending on the year it ranges from 28.9°C to 30.0°C. For the warmest sea here, come in May (30.6°C).

Sunshine and daylight

Around 3.0 hours of sunshine a day (estimated from cloud cover), 11.7 hours of daylight: the sun rises about 06:09 and sets about 17:59 local time in mid-October. Average cloud cover is 74%.

Is October a good time to visit Bangkok?

It is a reasonable choice: hot days but expect showers. The best months for Bangkok on our scoring are December, January, November; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Hot even in Bangkok's coolest month

October has Bangkok's lowest average daytime high of the year, but calling it cool would be misleading. Temperatures reach 30°C on 73% of days, so plan for sustained heat rather than occasional warm spells. The humidity adds to the discomfort, particularly when you are walking around at midday. Loose, lightweight clothing and opportunities to cool down indoors will be more useful than a packed outdoor schedule. Nights average 24.1°C, which means evenings offer limited relief rather than a genuinely cool finish to the day. This suits travellers comfortable with warm, humid conditions; it is less appealing if you prefer to spend long stretches outside without taking breaks.

Make room for rain, not just heat

With rain on about 21 days, October is a month for adjustable plans. That does not mean every rainy day is a washout, but it does make a trip built around uninterrupted outdoor time a poor fit. Carry a compact umbrella or lightweight waterproof, and choose footwear you will not mind getting wet. Leave room to move outdoor plans around rather than assuming a particular part of the day will stay dry. Sunshine averages about 3.0 hours daily, so warmth should not be confused with clear skies. October works best if you are happy to alternate time outside with indoor breaks and treat sunshine as a bonus rather than the main reason to go.