AI-generated

Rayong weather & best time to visit

Sun, sea & sand

Best time: Nov – Feb
Warmest month: Apr · 34°
Warmest sea: May · 30.6°
Sunshine a year: 2,330 h
Rain a year: 1,779 mm
Climate: Tropical
Time zone: UTC+7
Elevation: 7 m

Climate in Rayong

Rayong has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 34 °C, while September is the coolest at 32 °C. With around 2,330 hours of sunshine a year, Rayong is sunny; February is the sunniest month with 8.1 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Rayong

The best time to visit Rayong is from November to February. For a beach holiday – sea from 21 °C, warm and mostly dry – go from November to February. From March to May and in November it can get very hot, with highs of up to 34 °C. The rainy season is from May to October; the wettest month is September with 301 mm.

Rayong through the seasons

How the weather changes over the seasons, with averages for each.

Rayong in the dry season

Nov – Apr

Good

32–34 °C by day
Sea 29 °C
7.7 h of sun a day
62 rainy days in all

Rayong in the rainy season

May – Oct

Fair

32–34 °C by day
Sea 30 °C
5.1 h of sun a day
149 rainy days in all

Which month for what?

Beach & swimming

Nov – Feb

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

No month

15–28 °C and not too much rain

Peak heat

Mar – May, Nov

Highs of 33 °C or more

Rainy months

May – Oct

Rainy season or more than 12 rainy days

Find your perfect month

Tell us what you like and we rate every month in Rayong for you.

Preferred daytime temperature 28 °C

Swimming in the sea

Sunshine

Little rain

Avoid muggy heat

Your best months: December – February

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Holiday weather in October

Good

Best time to visit: November – February

Where to go in October Sea temperature in October

Keep in mindFrequent rain

Air temperature33°CNight 25°All months Sea temperature29.4°Cvery warmAll months Sunshine5.7h / dayof 11.9 h daylightAll months Rainy days24days / month263 mmAll months

A typical day in October

Morning, 08:00: about 28°
Midday, 13:00: about 32°
Afternoon, 16:00: about 32°
Evening, 20:00: about 28°
Night, 23:00: about 27°

06:0517:57

Warm enough for a T-shirt in the evening.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour: Morning 05:51–06:33 · evening 17:28–18:10
Blue hour: Morning 05:43–05:51 · evening 18:10–18:18

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Rayong compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs rise from about 32° at the start of the month to 33° at the end. The days get 0.3 h shorter.

Early or late October?
October	1 Oct	31 Oct
Daytime high	32°	33°
Night-time low	25°	24°
Sea	29°	29°
Daylight	12.0 h	11.7 h

What is the weather like in Rayong in October?

In October, Rayong is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5.7 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 263 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a good month for a holiday in Rayong.

More details for October

Daylight: 11 h 52 min06:05 – 17:57
UV index: 11 · extremeclear sky, noon (estimate)All months
Muggy days: 31 daysdew point 18 °C or moreAll months
Wind: 11 km/haverage daily peakAll months
Cloud cover: 81 %on averageAll months
Hot days: 30 days30 °C or moreAll months
Time zone: UTC+7offset from UTC

How the score comes together

Temperatureweight 35 %79 %
Seaweight 25 %100 %
Sunshineweight 20 %45 %
Few rainy daysweight 20 %0 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

Swimwear
Sunscreen
Sunglasses & sun hat
Light, breathable clothes
Water bottle – drink plenty
Insect repellent
Rain jacket or umbrella

Compare two months in Rayong

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

January has the better holiday weather in Rayong: score 88 against 61. In January, days are 1 °C cooler than in October. The sea is 2 °C cooler in January. January has 18 fewer rainy days. The sun shines 2 hours longer a day in January.

October vs January, Rayong
Month	October	January
Holiday weather score	61	88better
Daytime high	33°	32°
Night-time low	25°	22°
Sea	29.4°	27.8°
Sunshine	5.7 h	7.7 hbetter
Rainy days	24	6better
Rainfall	263 mm	26 mmbetter
Muggy days	31	21better

Based on the climate averages 1996–2025.

Rayong month by month

The typical weather for every month at a glance.

88January32° · Sea 28° · 7.7 h

In January, Rayong is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sea averages 27.8 °C – lovely and warm for swimming. The sun shines for around 7.7 hours a day. Rain falls on about 6 days, adding up to 26 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Rayong.

Rayong in January

84February33° · Sea 28° · 8.1 h

In February, Rayong is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 28.2 °C – lovely and warm for swimming. The sun shines for around 8.1 hours a day. Rain falls on about 8 days, adding up to 37 mm. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, February is an excellent month for a holiday in Rayong.

Rayong in February

69March33° · Sea 29° · 7.8 h

In March, Rayong is very hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7.8 hours a day. It rains often – on about 15 days, adding up to 82 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a good month for a holiday in Rayong.

Rayong in March

60April34° · Sea 30° · 7.8 h

In April, Rayong is very hot: daytime highs average 34 °C, and even at night it stays warm at around 28 °C. The sea averages 30.2 °C – almost as warm as a bath. The sun shines for around 7.8 hours a day. It rains often – on about 20 days, adding up to 140 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, April is a good month for a holiday in Rayong.

Rayong in April

56May34° · Sea 31° · 5.9 h

In May, Rayong is very hot: daytime highs average 34 °C, and even at night it stays warm at around 28 °C. The sea averages 30.6 °C – almost as warm as a bath. Expect around 5.9 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 229 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Rayong.

Rayong in May

57June33° · Sea 30° · 4.9 h

In June, Rayong is hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. The sea averages 29.9 °C – almost as warm as a bath. Expect around 4.9 hours of sunshine a day. It is the rainy season: rain falls on about 24 days, totalling 203 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, June is a so-so month for a holiday in Rayong.

Rayong in June

59July32° · Sea 30° · 4.7 h

In July, Rayong is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 4.7 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 212 mm. The thermometer climbs to 30 °C or more every day. The air is often humid and muggy. All in all, July is a so-so month for a holiday in Rayong.

Rayong in July

60August32° · Sea 29° · 4.7 h

In August, Rayong is hot: daytime highs average 32 °C, and even at night it stays warm at around 27 °C. The sea averages 29.2 °C – almost as warm as a bath. Expect around 4.7 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 197 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Rayong.

Rayong in August

60September32° · Sea 29° · 4.5 h

In September, Rayong is hot: daytime highs average 32 °C, and even at night it stays warm at around 26 °C. The sea averages 29.1 °C – almost as warm as a bath. Expect around 4.5 hours of sunshine a day. It is the rainy season: rain falls on about 27 days, totalling 301 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Rayong.

Rayong in September

61October33° · Sea 29° · 5.7 h

Rayong in October

76November33° · Sea 29° · 7.5 h

In November, Rayong is very hot: daytime highs average 33 °C, and even at night it stays warm at around 24 °C. The sea averages 29.2 °C – almost as warm as a bath. The sun shines for around 7.5 hours a day. Rain is frequent, with about 10 rainy days and 74 mm in total. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is a good month for a holiday in Rayong.

Rayong in November

88December32° · Sea 28° · 7.5 h

In December, Rayong is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sea averages 28.4 °C – lovely and warm for swimming. The sun shines for around 7.5 hours a day. Rain is rare: about 3 days bring 17 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Rayong.

Rayong in December

Climate in detail

Year & climate table

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Rayong

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

Warm 20–24°
Hot 24° and more
muggy month (15+ muggy days)

HotOctober: nights around 25°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).

The coolest nights are in December (22°), the warmest in April (28°). Nights stay tropical all year (20 °C and more), so a room with air conditioning or at least a fan pays off. It is muggy (dew point 18 °C or more) all year, on about 336 days a year.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 33°Night 25°Sea 29°

DayNightSea

Month	Score	Day	Night	Sea	Sun	Rain days	Rain mm
JanuaryJan	88	32°	22°	27.8°	7.7 h	6	26
FebruaryFeb	84	33°	25°	28.2°	8.1 h	8	37
MarchMar	69	33°	27°	29.2°	7.8 h	15	82
AprilApr	60	34°	28°	30.2°	7.8 h	20	140
MayMay	56	34°	28°	30.6°	5.9 h	25	229
JuneJun	57	33°	27°	29.9°	4.9 h	24	203
JulyJul	59	32°	27°	29.5°	4.7 h	26	212
AugustAug	60	32°	27°	29.2°	4.7 h	25	197
SeptemberSep	60	32°	26°	29.1°	4.5 h	27	301
OctoberOct	61	33°	25°	29.4°	5.7 h	24	263
NovemberNov	76	33°	24°	29.2°	7.5 h	10	74
DecemberDec	88	32°	22°	28.4°	7.5 h	3	17

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

12.68° N, 101.26° E · 7 m · Asia/Bangkok

Sea temperature

Swimming calendar

Sea temperature in Rayong

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October29.4°Cvery warm

8 in 10 years: 28.9 – 30.0 °C

Swimming season: all year

cold
fresh
refreshing
pleasant
warm
very warm

OctoberMean sea temperature 29.4°8 in 10 years 28.9° – 30.0°

20°

Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Rayong ranges from 27.8 °C in January to 30.6 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.

The sea warms up slowly: it is warmest in May, while the air already peaks in April. The sea temperature varies from year to year: in May, eight out of ten years were between 30.0 and 31.3 °C.

Sea temperature by month
Month	Average	Cool year	Warm year	Feels
JanuaryJan	27.8°	27.1°	28.8°	warm
FebruaryFeb	28.2°	27.5°	28.9°	warm
MarchMar	29.2°	28.6°	29.8°	very warm
AprilApr	30.2°	29.7°	30.8°	very warm
MayMay	30.6°	30.0°	31.3°	very warm
JuneJun	29.9°	29.2°	30.4°	very warm
JulyJul	29.5°	28.9°	30.2°	very warm
AugustAug	29.2°	28.5°	29.9°	very warm
SeptemberSep	29.1°	28.5°	29.7°	very warm
OctoberOct	29.4°	28.9°	30.0°	very warm
NovemberNov	29.2°	28.5°	30.0°	very warm
DecemberDec	28.4°	27.7°	29.6°	warm

Sunshine

Sunshine hours in Rayong

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

OctoberSunshine 5.7 hDaylight 11.9 hShare of daylight 48 %

SunshineDaylight

In October, the sun shines for about 5.7 of 11.9 hours of daylight in Rayong, 48 % of the daylight hours.

Sunshine hours: measured at the weather station 11 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.

Rain

Rain in Rayong: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

OctoberRainy days 24Rainfall 263 mm

In October, Rayong has about 24 rainy days with 263 mm of rain in total.

UV index

Sun protection

UV index in Rayong

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October: 11 · extremeAvoid the midday sun; SPF 50+, covering clothes, hat and sunglasses.

The sun is strongest in August (UV 13).

Minutes until sunburn in October

Very fair skin: about 10 min
Fair skin: about 15 min
Light brown skin: about 20 min
Olive skin: about 25 min

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds

Wind and clouds in Rayong

How breezy and how cloudy Rayong is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

OctoberWind 11 km/hBeaufort 2

WindBeaufort 4

In October, the wind in Rayong typically peaks at 11 km/h during the day: Beaufort 2, light breeze or less.

Breezy months for windsurfing and kiting

The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.

Clouds

Average share of the sky covered by cloud, day and night.

OctoberCloud cover 81 %Sunshine 5.7 h

In October, cloud covers on average 81 % of the sky over Rayong: mostly overcast, with about 5.7 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Heat & humidity

Heat and humidity in Rayong

How often the day gets hot in Rayong (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.

Heat calendar

pleasant
some hot or muggy days
often muggy
often hot
hot and muggy

OctoberHot days (30 °C+) 30Daytime high 33 °C

In October, Rayong has about 30 hot days, with an average daytime high of 33 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.

Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year

Planning a trip to Rayong

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

ArrivalNights

Rayong in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Rayong has its best school-holiday weather during the Christmas holidays (score 88) and its weakest during May half-term (score 56).

Easter holidays
Mar – Apr
63
Good
- 34 °C by day
- Sea 30 °C
- 7.8 h of sun a day
- 18 rainy days a month
Keep in mind: Peak heat
May half-term
May – Jun
56
Fair
- 34 °C by day
- Sea 30 °C
- 5.7 h of sun a day
- 25 rainy days a month
Keep in mind: Peak heat, Frequent rain
Summer holidays
Jul – Aug
60
Good
- 32 °C by day
- Sea 29 °C
- 4.7 h of sun a day
- 25 rainy days a month
Keep in mind: Frequent rain
October half-term
Oct
61
Good
- 33 °C by day
- Sea 29 °C
- 5.7 h of sun a day
- 24 rainy days a month
Keep in mind: Frequent rain
Christmas holidays
Dec – Jan
88
ExcellentBest holidays
- 32 °C by day
- Sea 28 °C
- 7.6 h of sun a day
- 5 rainy days a month
Good for: Beach & swimming

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight: about 12 h 10 min
Distance: 9,700 km
Time zone: UTC+7
Jet lag: About 6 days (6 h east)

Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.

Most routes need a change of planes, which adds time.

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Good to know: Thailand

Currency: Thai Baht (THB)
Language: Thai
Sockets: Type A, B, C, F · 220 V
Traffic: Drives on the left
Dialling code: +66

UK plugs need a travel adapter

Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.

Compare & alternatives

Compare with another place

Compare

Rayong compared

Put Rayong side by side with another destination.

Nearby:

Compare with home:

Rayong vs Sattahip

In October the holiday weather in Rayong and Sattahip is about equally good (score 61 vs 59). During the day it is about as warm in Sattahip as in Rayong. The sea is about equally warm.

Rayong vs Sattahip, in October
in October	Rayong	Sattahip
Holiday weather score	61	59
Daytime high	33°	33°
Sea	29°	29°
Sunshine	6 h	6 h
Rainy days	24	23
Best time	Nov – Feb	Nov – Mar

Through the year

OctoberRayong 33°Sattahip 33°

RayongSattahip

Go to Sattahip

Best places in the country

Ranking

Thailand in October: the best places

In October, Rayong ranks 12 among the 31 nearest destinations in this country.

Pattaya31°30°67
2Hua Hin31°29°66
3Ko Kut31°29°66
4Koh Tao30°29°66
5Ko Pha-ngan28°29°66
6Koh Samui31°29°66
7Laem Chabang32°30°65
8Ko Chang31°29°65
12RayongThis page33°29°61

All destinations: Thailand

Places nearby

Near Rayong

Other destinations close by.

Places with a similar climate

Places with a climate like Rayong

Destinations whose weather through the year is closest to Rayong's – good alternatives.

Frequently asked questions about Rayong

When is the best time to visit Rayong?

The best time to visit Rayong is from November to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Rayong?

The sea temperature in Rayong ranges from 27.8 °C in January to 30.6 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.

Can you swim in Rayong in October?

Yes. In October the sea averages 29.4 °C – almost as warm as a bath.

What is the warmest month in Rayong?

April is the warmest month, with average highs of 34 °C and nights around 28 °C. September is the coolest month at 32 °C.

When does it rain most in Rayong?

The rainy season is from May to October; the wettest month is September with 301 mm. The driest month is December with 17 mm.

How many hours of sunshine does Rayong get?

Rayong gets around 2,330 hours of sunshine a year. The sunniest month is February with 8.1 hours a day; in September there are 4.5 hours a day.

What time zone is Rayong in?

Rayong is on UTC+7 all year.

How long is the flight from London to Rayong?

A nonstop flight from London to Rayong takes about 12 h 10 min, for a straight-line distance of about 9,700 km. Most routes need a change of planes, which adds time.

Which school holidays are best for Rayong?

Rayong has its best school-holiday weather during the Christmas holidays (score 88) and its weakest during May half-term (score 56). Holiday ratings (0–100): Easter holidays 63, May half-term 56, summer holidays 60, October half-term 61, Christmas holidays 88.