Tha Bo in Spring

In spring (March, April and May), Tha Bo sees average daytime highs around 34°C and overnight lows near 24°C, with 343 mm of rain over about 41 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.

Across spring, daytime highs hold fairly steady around 34°C. The sky is clear or mostly clear about 38% of the time across spring, and the air most often feels oppressive.

Spring is Tha Bo's 3rd-best season to visit on our travel score. For the whole year in context, see Tha Bo's year-round climate.

Avg daytime high: 34°C; warmest season of the year
Avg overnight low: 24°C
Rainfall: 343 mm; 41 wet days
Avg wind: 6 km/h
Travel score: 2.7; 3rd-best season
Months: Mar · Apr · May

← Winter Tha Bo year-round climate Summer →

Spring Summer Fall Winter

Temperature in Tha Bo in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 34°C.

A typical spring day in Tha Bo reaches about 34°C and drops to 24°C overnight. The warmest of the three months is April, the coolest March.

How spring really feels in Tha Bo

Once humidity and wind are folded in, spring brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

55 feel dangerously hot (≥ 39°C)

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tha Bo weather by month

How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	29° / 17°	10	1.6	11	6.9
Feb	32° / 19°	14	2.3	11.4	5.4
Mar	34° / 22°	35	6.1	11.9	3.5
Apr	35° / 25°	72	11.7	12.4	2.4
May	34° / 26°	236	22.7	12.8	2.1
Jun	33° / 26°	252	24.1	13	2.2
Jul	32° / 26°	295	25.3	13	2.4
Aug	32° / 25°	344	26.8	12.6	2.4
Sep	32° / 25°	274	24.3	12.1	2.6
Oct	31° / 24°	98	11.7	11.6	4.2
Nov	30° / 21°	21	2.8	11.2	5.9
Dec	29° / 18°	8	1.2	11	7.2

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Tha Bo gets around 343 mm of rain over 41 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 6 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 36 min in early March to 13 hours by late May. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.8 kWh/m².

Planning a trip in spring

Hazard calendar for Tha Bo

In seasonPeak

In spring, Tha Bo overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

Tha Bo sits in the Pacific typhoon belt; the season peaks July–October.

Tha Bo's monsoon runs May–September, when most of the year's rain falls.

Pacific typhoon

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Tha Bo?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

2.7

Sightseeing

3rd-best month of the year

5.4

Beach & pool

3rd-best month of the year

spring is a weaker month for outdoor sightseeing in Tha Bo.

What to pack for Tha Bo in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Tha Bo sees daytime highs around 34°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 41 days see rain.

light clothesrain gearsun protection

UV index in Tha Bo in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tha Bo peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	8	10	12	10	11	13	13	13	11	10	8	7
Level	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	8	Very high
Feb	10	Very high
Mar	12	Extreme
Apr	10	Extreme
May	11	Extreme
Jun	13	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	10	Extreme
Nov	8	Very high
Dec	7	Very high

Air quality in Tha Bo in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Tha Bo is worst in March — around 77 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (July, 23 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	31	44	77	73	32	24	23	23	24	26	25	26
Level	Moderate	Poor	Unhealthy	Unhealthy	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	31	Moderate
Feb	44	Poor
Mar	77	Unhealthy
Apr	73	Unhealthy
May	32	Moderate
Jun	24	Moderate
Jul	23	Moderate
Aug	23	Moderate
Sep	24	Moderate
Oct	26	Moderate
Nov	25	Moderate
Dec	26	Moderate

Location & terrain

Where is Tha Bo?

Tha Bo sits at 17.9°N, 102.6°E, 182 m above sea level, in Thailand. The nearest listed city is Vientiane, 13 km away.

Topography around Tha Bo

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

Within 3 km, the terrain around Tha Bo has only modest variations in elevation — a maximum elevation change of 32 m around an average of 169 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 64 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,486 m.

The land around Tha Bo is covered by cropland (43%) and trees (28%) within 3 km, cropland (47%) and trees (32%) within 16 km, and trees (54%) and cropland (39%) within 80 km.

3 km

32 m

cropland 43%

16 km

64 m

cropland 47%

80 km

1,486 m

trees 54%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Winter Tha Bo year-round climate Summer →

Spring weather nearby: Vientiane 13 km · Nong Khai 17 km · Nam Som 42 km · Kut Chap 47 km · Udon Thani 53 km · Phon Charoen 65 km · Na Klang 73 km · Nong Bua Lamphu 73 km

Thailand travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type A / B / C; 230 V · 50 Hz
Prices: ≈ 31% of US; price level, 2025
GDP per capita: $8,057; 2025
Happiness: 6.3 / 10; World Happiness, 2025
Homicide rate: 4.8; per 100k, 2011
Road deaths: 32.2; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 402
Religion

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 Tha Bo (17.85°, 102.5814°, elevation 182 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.