If you’re planning a summer trip to Hua Hin, get ready for hot days, warm nights, and a mix of sunshine and tropical rain. Daytime highs usually hover around 90–92°F (32–33°C), and nights barely dip below 79–80°F (26–27°C), so the heat’s pretty relentless.
This coastal city doesn’t really cool down. It’s smart to know what you’re in for before you show up.
Summer brings higher humidity and frequent rainfall, especially from May through October. You’ll notice showers come in short, heavy bursts, cooling the air for a moment but leaving it even muggier afterward.
Meanwhile, the Gulf of Thailand keeps the sea warm and perfect for swimming, even on rainy days.
If you get a handle on Hua Hin weather in summer, you can plan your days without much fuss. Some days are great for sunbathing, others for ducking into a café during a downpour.
The warm sea and long daylight hours give you plenty of time to enjoy the coast, though the humidity and breezes shape the whole experience.
Overview of Summer Weather in Hua Hin
Summer in Hua Hin means steady heat, high humidity, and lots of cloud cover. Rain becomes more common as the season goes on, while daylight hours slowly shrink.
The Gulf of Thailand keeps sea temperatures steady, which just adds to the tropical vibe.
Typical Summer Climate
During summer, daily high temperatures in Hua Hin usually stick right around 32°C (90°F). Nights rarely get cooler than 26°C (79°F), so it never really feels refreshing outside.
You won’t see temperatures drop below 25°C or spike above 35°C very often.
Clouds dominate the sky, with overcast or mostly cloudy conditions about 93% of the time. Bright, clear days? Pretty rare.
Rainfall ramps up as summer rolls on, with monthly averages going from about 99 mm in early summer to 121 mm by late summer.
Humidity stays high, and you’ll feel muggy conditions nearly 100% of the time. Winds blow in at a moderate 14 km/h, mostly from the west.
The Gulf keeps water temperatures around 29–30°C, so the sea’s always ready for a swim.
What Defines Summer in Hua Hin
Summer in Hua Hin is all about the rainy season, which usually runs from June through October. You’ll see frequent showers, often in the afternoon or evening, but they don’t usually last all day.
Daylight gets shorter as summer goes on. In June, days last about 12 hours and 50 minutes. By late August, that drops to roughly 12 hours and 20 minutes.
Sunrise shifts from around 5:53 AM in June to 6:09 AM by the end of August.
Even with the rain, temperatures barely budge, so it’s always hot and humid. High dew points, thick cloud cover, and warm nights mean you don’t get much relief from the heat.
That’s really what makes Hua Hin’s summer stand out.
Comparison to Other Seasons
Compared to winter and spring, summer in Hua Hin gets wetter, cloudier, and way more humid. From December to March, it’s the dry season—clearer skies, barely any rain.
It’s still warm, but lower humidity makes it feel a lot more comfortable.
In April and May, just before the summer rains, temperatures usually peak. These months can feel hotter than the rest, even though rain hasn’t really started yet.
Once summer hits, you get more clouds, which softens the sunlight a bit but bumps up the humidity.
If you come in summer, expect more rain and less sunshine than the dry months. Still, the sea stays warm and air temperatures don’t change much between seasons, so Hua Hin always feels tropical.
Average Summer Temperatures
Hua Hin’s summer stays hot and humid, with nights that barely cool off. Daytime highs don’t shift much month to month, and you’ll only see occasional extremes.
Daytime and Nighttime Temperature Ranges
Daytime highs in summer usually land between 32°C and 33°C (90°F to 92°F). The heat doesn’t let up, with only minor changes from June through August.
Even on cloudy or rainy days, temperatures rarely dip far below that.
At night, it’s still warm and sticky. Lows sit around 25°C to 26°C (77°F to 79°F). Unlike other coastal spots, Hua Hin doesn’t really cool down after dark.
You’ll probably want air conditioning or at least a fan to sleep comfortably.
Because day and night temps are so close, the air feels heavy. Light, breathable clothes are a must if you want to stay comfortable outside.
Monthly Temperature Variations
June, July, and August don’t really differ much in temperature.
- June: Highs average 33°C (91°F), lows about 26°C (79°F).
- July: Highs stay at 33°C (91°F), lows dip just a bit to 25.5°C (78°F).
- August: Pretty much the same as July, with highs near 33°C (91°F) and lows around 25°C (77°F).
You won’t notice much difference between months. Rainfall does increase, but the heat stays steady.
If you’re not a fan of humidity, Hua Hin’s summer probably won’t win you over.
Record Highs and Lows
Extremes happen, but not often. Record highs during summer can hit 35–36°C (95–97°F), usually in late June or early July when humidity is way up.
Those days feel intense, especially with strong sun.
Record lows aren’t much to talk about. Even with heavy rain, nights rarely drop below 23°C (73°F).
You won’t get cool evenings, even in the wettest part of summer.
The lack of big swings between highs and lows just reinforces Hua Hin’s tropical climate—steady, with only occasional surprises.
Rainfall and Humidity During Summer
Summer in Hua Hin brings lots of showers, high humidity, and warm temps that really shape your day-to-day plans. You’ll run into short but heavy downpours, sticky air, and a big jump in moisture that affects comfort and what you can do outside.
Average Monthly Rainfall
Rain picks up from June through August. June usually sees 90–100 mm of rain, July gets 110–130 mm, and August often reaches 130–150 mm.
Most rain falls in quick bursts, not all-day storms. You might get a heavy shower in the afternoon, then clearer skies later.
Compared to the dry season, summer’s a different world. February, for example, only averages about 15 mm of rain, while August can get nearly ten times that.
Humidity Levels
Humidity in summer hardly lets up, often sitting between 75% and 85%. The mix of heat and moisture makes the air feel thick, especially in the afternoons.
Mornings feel a little less humid, but as soon as the sun’s up, the air gets sticky fast.
Evenings stay damp, though you might catch a breeze near the coast.
If you’re doing anything outside, take breaks, drink plenty of water, and wear light clothes. Fans or air conditioning indoors make a big difference.
Rainy Days and Patterns
Hua Hin usually gets 12–15 rainy days per month in summer. Rain mostly comes in short, intense bursts, not all day.
Afternoons are the prime time for showers, often lasting less than an hour. These storms can show up fast, with strong winds and heavy rain, but they’re gone before you know it.
Even with all that rain, you’ll still see sun on plenty of days. The mix of wet and dry spells means you can still hit the beach or explore town if you keep an eye on the weather.
Sunshine and Daylight Hours
Summer in Hua Hin brings long daylight hours, plenty of sun, and high UV levels. These factors definitely shape how you plan outdoor activities, from beach trips to sightseeing.
Average Daily Sunshine
Hua Hin gets loads of sunshine in summer, especially in March, which averages 9 to 10 hours of sun per day. April and May are still bright, usually 8 to 9 hours daily.
June through September, though, bring more clouds. Sunshine drops to about 5 to 6 hours per day, and September is the cloudiest, with just 3.5 to 4 hours daily.
So, if you want long, sunny days at the beach, March through May is your best bet. If you visit in late summer, plan for shorter sunny breaks between rain showers.
Length of Daylight
Daylight doesn’t change much in Hua Hin. The city gets about 12 to 13 hours of daylight year-round because it’s near the equator.
In summer, sunrise is around 6:00 AM, and sunset happens close to 6:45–7:00 PM.
You can plan your day without worrying about big swings in daylight.
Even in the rainier months, you still get a full day of light, though clouds might make it seem a bit dimmer.
UV Index Trends
Hua Hin’s UV index stays high all year, and it climbs even more in summer. From March to May, midday UV levels often hit 10 or higher—that’s very high to extreme.
From June through September, UV levels still stay intense, usually 8 to 10. Even with clouds, UV rays can burn you.
Definitely use sunscreen (SPF 30+), wide-brimmed hats, and sunglasses. Try to do outdoor stuff in the morning or late afternoon when UV exposure drops a bit.
Stay hydrated and look for shade during peak hours so you can enjoy the weather without overdoing it.
Sea Temperature and Swimming Conditions
The sea around Hua Hin stays warm all year, with just small changes from month to month. Water temperatures make swimming possible in any season, though some months feel a bit nicer than others.
Average Sea Temperatures
The Gulf of Thailand keeps Hua Hin’s sea temperatures steady, almost never dipping below 27°C (81°F), even in the coolest parts of the year.
In summer, you’ll see averages around 29–30°C (84–86°F).
Here’s what you can expect by month:
| Month | Avg Temp °C | Avg Temp °F |
|---|---|---|
| June | 29.6 | 85.3 |
| July | 29.5 | 85.1 |
| August | 29.3 | 84.7 |
There’s barely any difference between months. The water feels like a warm pool, with only about a 1–2°C shift from night to day.
You don’t need to worry about sea temperature when planning your trip. Rain and wind patterns matter more for how nice the swimming conditions feel.
Best Months for Swimming
You can swim all year in Hua Hin, but the overall Hua Hin weather changes things up. From February through June, the sea feels its warmest, often above 29°C, and the water usually stays calm, perfect for long swims.
December to February brings great swimming too, with water that’s a bit cooler—around 27–28°C—and not much rain. You’ll get warm seas, more sunshine, and not many storms during these months.
September and October are the wettest, so expect rougher seas and more clouds, but swimming still happens. If you want the best shot at warm water and nice weather, late winter through early summer is your window.
Tips for Visiting Hua Hin in Summer
Hua Hin’s summer gives you hot, sticky days and plenty of rain showers. You’ll want to prepare for blazing sun, sudden downpours, and pick activities that actually suit the season.
What to Pack for the Weather
Pack light, breathable clothes—think cotton or linen. It’s usually close to 90°F, and the humidity can feel relentless, so skip anything heavy. Grab a wide-brimmed hat, sunglasses, and don’t forget high-SPF sunscreen for daytime.
Rain showers pop up often from June through September. Keep a compact umbrella or a light rain jacket handy. Waterproof sandals or shoes that dry quickly make walking around much easier.
For evenings, toss in a light long-sleeve shirt and some insect repellent to keep mosquitoes away. If temples are on your list, you’ll need modest clothes that cover your shoulders and knees.
A small cooling towel or a portable fan can seriously help when you’re out walking. Staying comfortable means you can actually enjoy Hua Hin’s beaches, markets, and sights, instead of just sweating through your shirt.
Health and Safety Considerations
Heat and humidity in Hua Hin mean you really need to stay hydrated. Drink bottled or filtered water all day, and maybe skip the alcohol on those scorching afternoons. Electrolyte packets help if you’re outside for hours.
Put on sunscreen often, even if the sky looks cloudy, since the UV here doesn’t mess around. Sunglasses with UV protection make a big difference for your eyes. Insect repellent is a must at night, especially near water or gardens.
If you have issues with your lungs or heart, avoid heavy outdoor activity in the mid-afternoon when heat stress peaks. Cool off in the shade, malls, or any indoor spot you find.
Rain makes Hua Hin’s roads slippery fast, so wear shoes with good grip and take it easy if you’re using a scooter or motorbike. With a little care, you’ll stay healthy and safe during your trip.
Popular Activities During Summer
Hua Hin’s summer brings plenty to do, even when it rains. Most mornings feel clearer, so you might want to stroll along the beach, go for a swim, or try out some water sports. The sea stays pretty warm, about 85°F, which is honestly perfect for a dip.
When afternoon hits and the rain rolls in, indoor spots start to sound appealing. You could wander through shopping malls or check out some art galleries. The Hua Hin Railway Station is worth a visit too. If you’re looking for a break from the sticky air, cafés and seafood restaurants offer a cool escape.
As the sun goes down, Hua Hin gets lively with night markets like Cicada Market and Hua Hin Night Bazaar. These places are great for grabbing a bite and doing a little shopping while the air cools off. Golfers can still play since the courses stay open all year, but honestly, it’s a lot nicer if you tee off early.
You might want to plan a day trip to a nearby national park, like Kaeng Krachan or Sam Roi Yot. If you time it right, short hikes or boat tours in the morning can be a lot of fun before the rain shows up.