Nam Som weather in March

In March, Nam Som sees average daytime highs of 34°C and overnight lows near 22°C, with 39 mm of rain across 6.9 wet days and about 11.9 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 61% of the time in March, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is Nam Som's 4th-clearest and 2nd-windiest month. For the whole year in context, see Nam Som's year-round climate.

Daytime high
34°
2nd warmest
Overnight low
22°
5th coldest
Rainfall
39 mm
6.9 wet days
Daylight
11 h 54 min
6:25 AM – 6:17 PM
Cloud cover
38%
4th clearest
Wind
7 km/h
2nd windiest
Solar energy
5.89 kWh/m²
Travel score
3.6
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 34°C through the month.

A typical March day in Nam Som reaches about 34°C in the afternoon and slips back to 22°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 37°C. Set against its neighbours, March runs about 3°C warmer than February and about 1°C cooler than April.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13320
23320
33320
43320
53320
63320
73321
83321
93421
103421
113421
123421
133421
143421
153422
163422
173422
183422
193422
203422
213422
223422
233422
243422
253422
263423
273423
283423
293423
303423
313423

How March really feels in Nam Som

Once humidity and wind are folded in, March averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Nam Som weather by month

How March compares with the rest of the year at a glance. March is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°101.611.17.1
Feb31° / 18°142.411.45.5
Mar34° / 22°396.911.93.6
Apr35° / 24°7812.812.42.5
May33° / 25°23623.112.82.3
Jun32° / 25°23122.8132.4
Jul32° / 25°26824.9132.5
Aug31° / 25°32626.312.62.6
Sep31° / 24°26624.412.12.8
Oct31° / 23°10512.311.64.4
Nov30° / 20°232.911.26.1
Dec28° / 17°91.3117.7

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58713
68713
78614
88614
98416
108416
118317
128119
138020
147921
157723
167525
177426
187327
197228
207030
217030
226832
236832
246832
256832
266832
276733
286733
296733
306832
316832

Chance of precipitation in March

Any precipitation

Nam Som gets around 39 mm of rain over 6.9 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
110
210
311
411
512
612
713
814
914
1015
1116
1217
1319
1420
1521
1623
1724
1825
1926
2027
2128
2229
2330
2430
2531
2632
2732
2832
2933
3033
3133

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the muggy band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
14173137110
24163137110
34153238110
44143239120
54133239120
64133140120
73123141130
83113042130
93103042140
10392943150
11382844170
12382744180
13272644200
14262545220
15262445230
16252345250
17152245270
18152145280
19142045300
20141944310
21141844330
22141843340
23141742360
24141642370
25141541390
26041541400
27041441410
28041340430
29041239440
30031239460
31031138471

Wind in March

Winds average 7 km/h in March.

Across March, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 36 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over March. Sunrise moves from 6:36 AM to 6:12 AM, and sunset from 6:13 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:366:13
211.66:356:13
311.76:346:14
411.76:346:14
511.76:336:14
611.76:326:15
711.76:326:15
811.76:316:15
911.86:306:15
1011.86:296:16
1111.86:296:16
1211.86:286:16
1311.86:276:16
1411.86:266:17
1511.96:256:17
1611.96:256:17
1711.96:246:17
1811.96:236:18
1911.96:226:18
2011.96:216:18
2112.06:216:18
2212.06:206:18
2312.06:196:19
2412.06:186:19
2512.06:176:19
2612.06:166:19
2712.16:166:19
2812.16:156:20
2912.16:146:20
3012.16:136:20
3112.16:126:20

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.89 kWh/m².

For context, solar energy here swings from a low near 4.2 kWh/m² to a high of 6.03 kWh/m² in April across the year — March's 5.89 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
316.0Bright
Planning a trip in March

Hazard calendar for Nam Som

In seasonPeak

None of Nam Som's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is March a good time to visit Nam Som?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.6
Sightseeing
6th-best month of the year
6.8
Beach & pool
5th-best month of the year

March is a weaker month for outdoor sightseeing in Nam Som. The water and warmth also suit a beach or pool day.

What to pack for Nam Som in March

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

In March, Nam Som sees daytime highs around 34°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Nam Som in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks 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 Nam Som peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 12UV 13Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr11Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Nam Som in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Nam Som is worst in April — around 122 µg/m³ PM2.5 (unhealthy), about 8.3× the cleanest month (November, 15 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateApr 11119 µg/m³Nov 1615 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb37Poor
Mar108Unhealthy
Apr122Unhealthy
May28Moderate
Jun16Moderate
Jul15Moderate
Aug16Moderate
Sep15Moderate
Oct16Moderate
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Nam Som?

Nam Som sits at 17.8°N, 102.2°E, 231 m above sea level, in Thailand. The nearest listed city is Tha Bo, 42 km away.

Topography around Nam Som

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

Within 3 km, the terrain around Nam Som has only modest variations in elevation — a maximum elevation change of 156 m around an average of 227 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 559 m; within 80 km, large variations in elevation — a maximum elevation change of 951 m.

The land around Nam Som is covered by trees (51%) and cropland (36%) within 3 km, trees (66%) and cropland (28%) within 16 km, and trees (59%) and cropland (34%) within 80 km.

3 km
156 m
16 km
559 m
80 km
951 m
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Tha Bo 42 km · Vientiane 49 km · Na Klang 52 km · Kut Chap 55 km · Erawan 58 km · Loei 58 km · Nong Khai 60 km · Nong Bua Lamphu 68 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
Buddhist 93%Muslim 5%Christian 1%other 1%

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 Nam Som (17.7704°, 102.1895°, elevation 231 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).