Climate and average weather in Tailândia

In Tailândia, the weather is muggy, sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around March.

Best: late May to mid August

Over the course of the year, the temperature in Tailândia typically varies from 22°C to 35°C, and is rarely below 21°C or above 37°C. September is the hottest month of the year, while April is the coldest.

Based on the travel score, the best time of year to visit Tailândia for warm-weather activities is from late May to mid August.

Hottest
Sep
35°
Coldest
Apr
23°
Wettest
Mar
396 mm
Driest
Aug
19 mm
Rain / yr
1925 mm
201 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
47 m
2.9°S
Clearest
Aug
41% cloud

Tailândia weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late May to mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Tailândia, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Tailândia stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 35°C and low of 24°C; the coolest is April, with an average low of 23°C and high of 31°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in August.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3223
Feb3123
Mar3123
Apr3123
May3123
Jun3223
Jul3322
Aug3523
Sep3524
Oct3524
Nov3424
Dec3324

How hot and cold Tailândia really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Tailândia feels like about 40°C (around October 7). Nearly every day a year carries some heat stress, and 83 of them tip into dangerous heat (feels-like above 39°C), peaking in October.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan37322323
Feb36312323
Mar36312323
Apr37312323
May38312323
Jun37322323
Jul37332222
Aug39352323
Sep39352424
Oct39352424
Nov39342424
Dec38332424

Average hourly temperature in Tailândia

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on September afternoons, near 35°C, and coldest before dawn in April, near 23°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Tailândia weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°28226.512.22.5
Feb31° / 23°32625.812.12.4
Mar31° / 23°39629.6122.4
Apr31° / 23°32628.111.92.5
May31° / 23°19423.811.92.9
Jun32° / 23°6513.711.83.7
Jul33° / 22°378.711.83.7
Aug35° / 23°194.511.93.1
Sep35° / 24°224.7122.8
Oct35° / 24°337.512.12.7
Nov34° / 24°7710.312.12.7
Dec33° / 24°14918.112.22.6

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Tailândia gets about 1925 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.7 months, from around Dec 14 to Jun 6, peaking in March at about 97% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 22.

March is the wettest month by volume, with 396 mm over about 30 wet days; August is the driest, with 19 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetMar 27 · 97%Aug 22 · 14%
Rain on a day (%)Rain days
Jan8527
Feb9226
Mar9530
Apr9428
May7624
Jun4614
Jul289
Aug145
Sep165
Oct258
Nov3410
Dec5918

Monthly rainfall

Over a full year, Tailândia collects about 1925 mm of rain across 201 wet days — roughly 160 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 396 mm, while August is the driest at just 19 mm. The three wettest months alone bring about 54% of the year’s total.

050100150200250300350400450JanFebMarAprMayJunJulAugSepOctNovDec282326396326194653719223377149
Rainfall (mm)Rain days
Jan28227
Feb32626
Mar39630
Apr32628
May19424
Jun6514
Jul379
Aug195
Sep225
Oct338
Nov7710
Dec14918

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Tailândia, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around May 27 and lasts for 5.3 months, ending around November 4. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 85% of the time on average.

The cloudier part of the year begins around November 5 and lasts for 6.7 months, ending around May 26. The cloudiest month is March, when it is overcast or mostly cloudy 92% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecAug 23 · 85%Mar 29 · 5%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1387
Feb1090
Mar892
Apr892
May2971
Jun6139
Jul7624
Aug8515
Sep7921
Oct5743
Nov3664
Dec2674

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. Close to the equator, Tailândia barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.26:206:30
Feb12.16:286:33
Mar12.06:256:26
Apr11.96:186:14
May11.96:166:08
Jun11.86:216:11
Jul11.86:266:17
Aug11.96:236:17
Sep12.06:116:10
Oct12.15:596:03
Nov12.15:576:05
Dec12.26:076:17

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Tailândia averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 18 days.

The sunnier stretch runs 4.8 months, from around May 31 to Oct 24. The sunniest month is August, with roughly 17 sunny days (bright).

The greyest month is April, down near 1 sunny days — about 97% fewer than the August peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightAug 218 daysApr 30 days
Sunny daysSky
Jan1Gloomy
Feb1Gloomy
Mar1Gloomy
Apr0Gloomy
May3Gloomy
Jun10Mixed
Jul15Bright
Aug17Bright
Sep14Mixed
Oct8Gloomy
Nov4Gloomy
Dec2Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

Tailândia is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan008317
Feb007525
Mar006040
Apr003961
May003367
Jun026830
Jul116794
Aug226710
Sep024760
Oct017812
Nov010855
Dec03889

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Tailândia is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 5.4 months, from around Jul 8 to Dec 17. The windiest month is September, averaging about 8 km/h (calm).

The calmer part of the year runs from around Dec 18 to Jul 7, with April the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmlight breezeSep 18 · 8 km/hApr 15 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb5calm
Mar5calm
Apr5calm
May5calm
Jun6calm
Jul7calm
Aug8calm
Sep8calm
Oct8calm
Nov7calm
Dec6calm

Hazard calendar for Tailândia

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Tailândia's monsoon runs January–May, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Tailândia

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Tailândia throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around early August, Tailândia is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Tailândia for general outdoor tourist activities is from late May to late August, with a peak score in the last week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 27 · 3.8

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan2.5poor
Feb2.4poor
Mar2.4poor
Apr2.5poor
May2.9poor
Jun3.7fair
Jul3.7fair
Aug3.1poor
Sep2.9poor
Oct2.7poor
Nov2.7poor
Dec2.6poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Tailândia for hot-weather activities is from early June to late November, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 30 · 6.8

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Tailândia, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

Tailândia packs about the same all year — highs hold near 35°C. Across the year the things worth having are light clothes, sun protection and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Tailândia sees daytime highs around 35°C and nights near 24°C. Pack light clothes and sun protection. About 5 days see rain.

UV index (midday) in Tailândia by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Tailândia peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Nov 23UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun11Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec10Very high

Average hourly UV index in Tailândia

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan86
Feb8.56.5
Mar8.56.5
Apr86.5
May7.55.5
Jun7.55.5
Jul7.55
Aug7.55.5
Sep7.55.5
Oct86
Nov7.55.5
Dec7.55.5

Air quality in Tailândia by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Tailândia is worst in November — around 38 µg/m³ PM2.5 (poor), about 3.7× the cleanest month (June, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateModerateNov 1536 µg/m³Jun 1010 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun10Good
Jul12Moderate
Aug15Moderate
Sep18Moderate
Oct26Moderate
Nov38Poor
Dec22Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Tailândia is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Tailândia banks about 6,560 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan540
Feb477
Mar525
Apr506
May532
Jun518
Jul549
Aug583
Sep581
Oct602
Nov575
Dec572

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Tailândia receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.1 and 6.3 kWh/m².

The brighter stretch of the year lasts 5.3 months, from around Jul 13 to Dec 20. The brightest month is October, averaging about 6.3 kWh/m² (intense).

The dimmest month is April, down near 4.1 kWh/m² — roughly 34% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseOct 36.3 kWhApr 124.1 kWh
Solar energy (kWh/m²)Level
Jan4.5Bright
Feb4.3Bright
Mar4.2Bright
Apr4.1Bright
May4.4Bright
Jun4.8Bright
Jul5.2Bright
Aug5.8Bright
Sep6.2Intense
Oct6.3Intense
Nov5.8Bright
Dec5.2Bright

Where is Tailândia?

Tailândia sits at 2.9°S, 49.0°W, 47 m above sea level, in Brazil. The nearest listed city is Mocajuba, 74 km away.

Topography around Tailândia

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tailândia.

Within 3 km, the terrain around Tailândia has only modest variations in elevation — a maximum elevation change of 29 m around an average of 48 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 75 m; within 80 km, only modest variations in elevation — a maximum elevation change of 153 m.

The land around Tailândia is covered by grassland (60%) and artificial surfaces (23%) within 3 km, grassland (56%) and trees (42%) within 16 km, and trees (77%) and grassland (22%) within 80 km.

3 km
29 m
16 km
75 m
80 km
153 m
treesgrasslandartificial surfacesbare terrainwater
Nearby: Mocajuba 74 km · Baião 82 km · Cametá 99 km · Goianésia do Pará 101 km · Tomé-Açu 107 km · Igarapé Miri 108 km · Moju 120 km · Tucuruí 122 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tailândia (-2.9472°, -48.9531°, elevation 47 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).