Loei in Spring

In spring (March, April and May), Loei sees average daytime highs around 33°C and overnight lows near 23°C, with 332 mm of rain over about 46 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 33°C. The sky is clear or mostly clear about 35% of the time across spring, and the air most often feels oppressive.

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

Avg daytime high: 33°C; warmest season of the year
Avg overnight low: 23°C
Rainfall: 332 mm; 46 wet days
Avg wind: 6 km/h
Travel score: 3.0; 3rd-best season
Months: Mar · Apr · May

← Winter Loei year-round climate Summer →

Spring Summer Fall Winter

Temperature in Loei in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 33°C.

A typical spring day in Loei reaches about 33°C and drops to 23°C overnight. The warmest of the three months is April, the coolest March.

How spring really feels in Loei

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

heat index over the day's high

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.

Loei 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	28° / 16°	12	1.9	11.1	7.4
Feb	31° / 18°	15	2.8	11.4	5.7
Mar	33° / 21°	47	7.8	11.9	3.8
Apr	34° / 23°	88	14.8	12.4	2.8
May	33° / 24°	198	23.6	12.8	2.4
Jun	32° / 25°	168	20.8	13	2.7
Jul	31° / 25°	188	22.2	12.9	2.9
Aug	31° / 24°	249	24.8	12.6	2.8
Sep	31° / 24°	241	24.1	12.1	3.0
Oct	30° / 22°	113	13.7	11.6	4.6
Nov	29° / 19°	24	3.4	11.2	6.6
Dec	27° / 17°	10	1.6	11	8.1

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Loei gets around 332 mm of rain over 46 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 5.7 kWh/m².

Planning a trip in spring

Hazard calendar for Loei

In seasonPeak

In spring, Loei overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Loei's monsoon runs May–October, when most of the year's rain falls.

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Loei?

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.

3.0

Sightseeing

3rd-best month of the year

5.5

Beach & pool

3rd-best month of the year

spring is a weaker month for outdoor sightseeing in Loei.

What to pack for Loei in Spring

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

In spring, Loei sees daytime highs around 33°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 46 days see rain.

light clothesrain gearsun protection

UV index in Loei in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Loei peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (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)	9	10	12	11	11	13	13	13	11	10	8	8
Level	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	10	Very high
Mar	12	Extreme
Apr	11	Extreme
May	11	Extreme
Jun	13	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	10	Extreme
Nov	8	Very high
Dec	8	Very high

Air quality in Loei 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 Loei is worst in March — around 50 µg/m³ PM2.5 (poor), about 3.1× the cleanest month (July, 16 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Loei's WHO annual average of 25 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	25	36	50	40	23	16	16	17	18	20	19	20
Level	Moderate	Poor	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	25	Moderate
Feb	36	Poor
Mar	50	Poor
Apr	40	Poor
May	23	Moderate
Jun	16	Moderate
Jul	16	Moderate
Aug	17	Moderate
Sep	18	Moderate
Oct	20	Moderate
Nov	19	Moderate
Dec	20	Moderate

Location & terrain

Where is Loei?

Loei sits at 17.5°N, 101.7°E, 244 m above sea level, in Thailand. The nearest listed city is Wang Saphung, 22 km away.

Topography around Loei

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

Within 3 km, the terrain around Loei has significant variations in elevation — a maximum elevation change of 274 m around an average of 256 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 518 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,810 m.

The land around Loei is covered by trees (59%) and artificial surfaces (25%) within 3 km, trees (76%) within 16 km, and trees (65%) and cropland (24%) within 80 km.

3 km

274 m

trees 59%

16 km

518 m

trees 76%

80 km

1,810 m

trees 65%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Winter Loei year-round climate Summer →

Spring weather nearby: Wang Saphung 22 km · Erawan 32 km · Na Klang 53 km · Nam Som 58 km · Phu Kradueng 69 km · Nong Bua Lamphu 82 km · Kut Chap 89 km · Lom Sak 94 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 Loei (17.4905°, 101.7275°, elevation 244 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.