Few beach towns in Thailand get less rain than Hua Hin. It stays dry from December to April, March to May is the hottest stretch, and the real rain comes late, in September and above all October; November is usually much drier than people expect.
That pattern is different from both of Thailand's famous island coasts. Phuket on the Andaman Sea is wet from May to October, and Koh Samui on the other side of the Gulf gets its heaviest rain in November. Hua Hin lies on the west side of the Gulf of Thailand, with the hills along the Myanmar border between it and the Andaman Sea, and on the averages it misses the worst of both monsoons. Every figure here comes from the Thai Meteorological Department (TMD) and is a 30-year average (1991–2020) for its Hua Hin station. They describe a normal year, not this year, so check the forecast before you travel.
For the whole country, region by region, see our Thailand weather by month page. This page stays in Hua Hin. Our Hua Hin guide covers the town itself.
Hua Hin climate at a glance (TMD, 1991–2020)
- Rain in a year
- 935.9 mm on about 103 days
- Driest months
- December (11.9 mm) and February (13.8 mm)
- Wettest month
- October (250.4 mm on 15.8 days)
- Hottest months
- April and May (average high 33.4–33.7 °C)
- Coolest nights
- January (average low 22.8 °C)
- Sunniest month
- March (248 hours of sunshine)
- Forecasts
- Thai Meteorological Department, hotline 1182
The twelve months in numbers
Below are the typical daytime maximum and night-time minimum, monthly rainfall, the number of days with any rain at all, and hours of sunshine. A "rainy day" in TMD's count is any day with at least 0.1 mm, so a five-minute shower at dusk counts the same as a wet afternoon.
| Month | High / low °C | Rain (mm) | Rainy days | Sunshine (hours) |
|---|---|---|---|---|
| Jan | 29.9 / 22.8 | 25.0 | 1.9 | 214 |
| Feb | 31.1 / 23.6 | 13.8 | 1.2 | 225 |
| Mar | 32.3 / 24.9 | 50.5 | 2.9 | 248 |
| Apr | 33.4 / 26.0 | 46.5 | 3.7 | 234 |
| May | 33.7 / 26.3 | 95.5 | 12.3 | 197 |
| Jun | 33.4 / 26.1 | 82.4 | 13.4 | 142 |
| Jul | 33.0 / 25.7 | 90.2 | 14.8 | 134 |
| Aug | 32.9 / 25.6 | 67.1 | 14.1 | 134 |
| Sep | 32.3 / 25.3 | 129.8 | 15.5 | 143 |
| Oct | 31.0 / 24.8 | 250.4 | 15.8 | 160 |
| Nov | 30.6 / 24.5 | 72.8 | 5.4 | 191 |
| Dec | 29.8 / 23.3 | 11.9 | 1.6 | 200 |
Two things stand out. The temperature hardly moves: the gap between the coolest and the hottest month is only about four degrees. And the rainy days from May to August bring surprisingly little water, between 67 and 96 mm a month. That is a few showers a week, often short, not the all-day downpours of the Andaman coast.
December to February: dry, bright and the busiest time
This is the season most visitors aim for, and the numbers explain why. December, January and February together average about 50 mm of rain on fewer than five days. Daytime highs stay around 30–31 °C and nights fall to about 23 °C, which is as cool as Hua Hin gets. The lowest reading at the station in those 30 years was 14.9 °C, in a December.
One detail surprises people. The station logs haze on about 19 to 21 days in December and January, so the sky over the bay is often pale and milky rather than deep blue. It is still the most comfortable time of year for walking, golf and long days at the beach. It is also when Bangkok families and winter visitors fill the hotels, so book early for Christmas, New Year and Chinese New Year; our guide to where to stay in Hua Hin helps with the choice of area.
March to May: the hot months
March is the sunniest month of the year, with 248 hours of sunshine, and it is still dry. April and May are the hottest, with average highs of 33.4 and 33.7 °C and nights that stay above 26 °C. The record at the station is 38.7 °C, set in a May. Plan beach time for the morning and late afternoon, and read our page on coping with heat and sun if you are not used to it.
May is the turning point. The number of rainy days jumps from under four in April to more than twelve, and May also has more thunderstorm days than any month except October. Most of these storms are short and come in the afternoon or evening.
June to August: why Hua Hin stays fairly dry
These are the core months of the southwest monsoon, the season when Phuket averages 240–309 mm of rain a month at the town station. Hua Hin gets 67–90 mm. The usual explanation is the range of hills along the Myanmar border, which takes much of the rain out of the monsoon wind before it crosses to the Gulf side.
The difference shows in the sunshine, too. Hua Hin still averages more than four hours of sun a day in July and August, and cloud cover is the main change from the dry season. For travelers who can only travel in July or August, Hua Hin is one of the more reliable choices on the mainland. Long weekends still bring crowds from Bangkok, so book the train or bus early; the options are compared in our Bangkok to Hua Hin guide.
September and October: the wet peak
The rain comes late in Hua Hin. September averages 129.8 mm, and October 250.4 mm on almost 16 days, which makes it the only truly wet month of the year. In 2025, TMD's October summary recorded the southwest monsoon still blowing over the Gulf until mid-month, before the wind swung round to the northeast in the final days. In Hua Hin, both phases can bring heavy showers.
This is the time to keep plans flexible. Afternoon storms can flood low streets for an hour or two, and outdoor markets are less pleasant; the covered seating at one of the Hua Hin night markets helps. Hotels are quieter and often cheaper outside public holidays. For what travel in the wet season really involves, see our rainy-season guide.
November: drier than its reputation
Many websites say Hua Hin's rainy season runs from September to November. The official averages do not support the last part. November averages 72.8 mm on only 5.4 rainy days, less than a third of October's rain, and sunshine climbs back to about 190 hours.
There is one caution. The heaviest single day of rain ever recorded at the station, 298.5 mm, fell in a November, when the last storms of the season pass through. A November trip is usually dry, but one bad day can still close a road or a boat trip.
Hua Hin is the safer November choice than Koh Samui. In the same month Samui averages 444.6 mm of rain, about six times as much. If you want a Gulf beach in November and do not need an island, Hua Hin is the drier bet; our page on the best time for the Thai islands compares the two coasts.
Wind and the sea
The direction of the wind changes with the seasons, and it decides how the bay looks. TMD's records for the station show the prevailing wind from the northeast from October to January, from the southeast from February to May, and from the southwest and west from June to September. Hua Hin's beach faces east, so the northeast and southeast winds of the dry season blow in from the sea, while the summer west wind blows off the land.
Average wind speeds at the station are low, at 2–3 knots, but they are measured on land and hide short gusts; the strongest gusts recorded reach 33–35 knots from August to December. In practice the sea is flat on most days, which is why families like the town, but flat water still has risks. British government travel advice names May to October as the months when stinging jellyfish are most likely near the beach, and box jellyfish have been reported in the Gulf; read our page on jellyfish and first aid before you swim, and obey any red flag.
The best time for a long stay
For a winter of three or four months, November to March is the strongest stretch on the averages: little rain, the lowest humidity of the year in December and January, and the coolest nights. Expect the highest rents in December and January. April and May are the months many long-stayers find hardest because of the heat, and October is the one to avoid if rain matters to you.
If you are thinking of living here all year, the climate is one of Hua Hin's real advantages: under a meter of rain a year, against more than two meters in Phuket. Our page on long stays in Hua Hin covers housing, healthcare and visas. A dry January day is also the right time for a trip south to Phraya Nakhon Cave in Khao Sam Roi Yot.
Frequently asked questions
What is the rainiest month in Hua Hin?
October. The Thai Meteorological Department's 1991–2020 average for the Hua Hin station is 250.4 mm of rain on 15.8 days. September is second with 129.8 mm. Every other month averages less than 100 mm.
Should you avoid Hua Hin in November?
Usually not. November averages 72.8 mm of rain on 5.4 days, far drier than October, with about 190 hours of sunshine. A single heavy storm is still possible, so leave a spare day for anything weather-dependent, such as a boat trip.
Does Hua Hin have the same rainy season as Phuket?
Only partly. Phuket is wet from May to October, with about 240–350 mm a month at its town station. Hua Hin gets showers in the same months but much less water, under 100 mm a month until September, and then a short wet peak in October.
When is the hottest time in Hua Hin?
April and May. The average daily high is 33.4 °C in April and 33.7 °C in May, and nights stay above 26 °C. The highest temperature measured at the station in the 30-year period was 38.7 °C, in May.
Can you swim in the sea at Hua Hin all year?
The water is warm all year and usually calm, but conditions change with the wind and storms. Check with hotel staff or lifeguards whether jellyfish have been seen, above all from May to October, swim where others swim, and never swim when a red flag is flying.
Sources
- Thai Meteorological Department – Climatological Data of Thailand for 30 Year Period (1991–2020), Hua Hin station (checked October 2026)
- Thai Meteorological Department – Monthly climate summary, October 2025 (checked October 2026)
- Thai Meteorological Department – Monthly climate summary, May 2025 (checked October 2026)
- UK Foreign, Commonwealth and Development Office – Thailand: safety and security (checked October 2026)