What is the weather in Hua Hin, in one minute?
Hua Hin sits on the western side of the Gulf of Thailand, about 200 km south of Bangkok, and its year has four parts. December to March is dry, with rain on about 2 days of each month. April and May are hot. June to September is a lighter wet season. October is the heavy month. Here is the whole year:
Hua Hin: Average high and low temperature, °C
Hua Hin: Rainfall, mm
Averages 2015-2025 · Source: Open-Meteo, CHIRPS · How we measure
Read the rain line: flat and low from December to March, a bump in May, a lower stretch in June to August, then a spike in October that falls away again by December. The temperature bands peak in April. For one month at a glance, the Hua Hin page is faster.
Where to be next: your month-by-month route, $19
A route for your months with a leave-by date for each stop, a backup, and the seasonal traps on your path. Drafted from 11 years of weather data, every number checked against it, in your inbox within 48 hours. Not included: visas, insurance or bookings.
Why is Hua Hin dry in December when Koh Samui is not?
Because the Gulf is not one weather zone. In December Hua Hin gets 19 mm of rain, on about 2 of 31 days. Koh Samui, further south on the same gulf, gets 318 mm, and in November the gap is wider, 133 mm against 457 mm. Bangkok is as dry as Hua Hin in December but hotter and busier, with its own seasons of air pollution.
December averages, side by side
| Place | High | Low | Rain | Rain days |
|---|---|---|---|---|
| Hua Hin | 29° | 23° | 19 mm | 2 |
| Koh Samui | 28° | 25° | 318 mm | 10 |
| Bangkok | 31° | 22° | 9 mm | 1 |
Averages 2015-2025 · Source: Open-Meteo, CHIRPS · How we measure
Hua Hin's rain peaks in October and is mostly over by December, while Samui's wettest stretch runs from October to December, with November the biggest month. That is why a December plan that says "Gulf of Thailand" can mean two very different months, and why the Koh Samui and Koh Phangan guide points to later months for the islands. Our Thailand in December page ranks the places side by side, and the three coasts compared shows where else is dry.
Which months are best for a long stay in Hua Hin?
December, January and February. All three have rain on about 2 days of the month, and highs of 29°C, 30°C and 31°C. January and February each have 32 mm of rain, nothing that spoils a week. March is just as dry (19 mm) but already 33°C, and humidity stays near 70 percent from January to April.
If you want one answer, take January. It has the coolest nights of the dry stretch (22°C), plenty of sun (cloud near 50 percent in our data) and it is nowhere near the heat of April.
How hot does Hua Hin get in April and May?
April is the hottest month: an average high of 34°C and a low of 26°C. Nights stay warm all through April and May, so air conditioning matters if you work from the room. April is still mostly dry, with 46 mm and rain on about 5 of 30 days. May is the turn: the high is still 33°C, but rain jumps to 112 mm on about 12 of 31 days, often as afternoon storms. If heat is your limit, skip April and May.
How wet is the wet season, really?
Less wet than most sites suggest, with one exception. From May to September Hua Hin gets 68 to 120 mm a month, with rain on about 9 to 14 days of the month. That is a lot of showers but not a washout: Bangkok gets 169 to 315 mm in the same months.
The exception is October: 276 mm, on about 15 days. Several pages we read name September and October as the wet pair; in our data September (120 mm) looks more like May (112 mm) than like October. Plan around October, not September.
Cloud cover is the other cost. From May to September the sky is 84 to 93 percent covered, so even on a dry day it is often grey.
Is November a good month for Hua Hin?
Not yet. November is a shoulder month: 133 mm of rain on about 7 of 30 days, a 30°C high and humidity around 76 percent. One top result calls November part of the dry season; in our data it is the tail of the wet one. If your dates are flexible, aim for December.
What would we do?
Take Hua Hin from December to February, with January the pick. Use it from June to September if you can live with showers and grey skies, and avoid October. If you want the islands, wait until February or later.
This is a weather view only. We hold no data on sea conditions, flights, rent or internet quality.
How sure are these numbers?
They are month-of-year averages for one point at each place, from stored climate data (Open-Meteo archive and CHIRPS rain totals, 2015 to 2025), so any single year can be wetter or drier. Other sites quote different figures because they use different stations and years. Cloud is the average share of sky covered, not hours of sunshine. Rain days are the stored share of days with at least four millimetres (the tropical rule), times the days in the month, rounded to the nearest day.
Frequently asked questions
What is the best month to visit Hua Hin?
December to February. December has 19 mm of rain and a 29°C high, January 32 mm and February 32 mm with a 31°C high, and rain falls on about 2 days of each month.
When is the rainy season in Hua Hin?
May to November, with a clear peak in October at 276 mm and rain on about 15 of 31 days. May (112 mm) and September (120 mm) are far lighter than October.
Is Hua Hin dry in December?
Yes. December has 19 mm of rain, on about 2 of 31 days, while Koh Samui in the same gulf has 318 mm and about 10 rainy days.
What is the hottest month in Hua Hin?
April, with an average high of 34°C and a low of 26°C, followed by May at 33°C. March is 33°C too, but drier.
Is Hua Hin drier than Bangkok?
In the wet season, yes. September brings 120 mm to Hua Hin and 315 mm to Bangkok. In the dry months they are close: 19 mm against 9 mm in December.
Not sure where yet? Pick your months and what to avoid, and get your 3 best places → Where should I go?
Weather data: Open-Meteo (CC BY 4.0), open-meteo.com; rain totals: CHIRPS (Climate Hazards Center, UC Santa Barbara). Processed by NomadWeather from stored copies of the data.