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Si Wilai, Thailand

Bueng Kan · Thailand

Si Wilai is a small city in Bueng Kan, Thailand with a population of 11,139. Elevation: 574 ft (175 m). Average temperature: 77°F (25°C).

11,139 Population 19/sq mi density
574 ft Elevation 175 meters
77°F Avg Temperature 25°C
99.8 in Annual Rain
Asia / Bangkok Timezone

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About Si Wilai

Si Wilai

Si Wilai is a district (amphoe) in the eastern part of Bueng Kan province, northeastern Thailand.

People

Population11,139
Density19/mi²

Climate

Avg Temp77°F (25°C)
Rain99.8 in/yr
Sunny Days322/yr
Elevation574 ft (175 m)
Population11,139
Population Density19 / sq mi
Elevation574 ft (175 m)
Coordinates18.1819°, 103.7479°
TimezoneAsia/Bangkok
Country🇹🇭 Thailand
State / ProvinceBueng Kan
Average Temperature77°F (25°C)
January Average70°F (21°C)
July Average83°F (28°C)
Annual Precipitation99.8 inches (2,535 mm)
Annual Snowfall0.0 inches (0 cm)

About Si Wilai

Si Wilai is a small city in Thailand (Bueng Kan) with a population of 11,139. The city sits at an elevation of 574 feet (175 meters) above sea level. The average annual temperature is 77°F (25°C). Temperatures range from 70°F in January to 83°F in July. Annual precipitation averages 99.8 inches. The timezone is Asia/Bangkok.

Climate in Si Wilai

Si Wilai has an average annual temperature of 25.3°C (78°F). The hottest month is Apr (29.5°C), the coldest is Dec (18.9°C). Average annual precipitation is 1738 mm.

Month Avg °C / °F Min / Max °C Rain (mm)
Jan 19.8°C / 68°F 9.3° / 30.4° 9.4
Feb 23°C / 73°F 12.1° / 34.5° 27.8
Mar 26.9°C / 80°F 15.6° / 37.7° 62.9
Apr 29.5°C / 85°F 19.7° / 40.1° 74.8
May 29.2°C / 85°F 22.3° / 38.9° 194.9
Jun 27.6°C / 82°F 23.8° / 34.7° 239.5
Jul 27.4°C / 81°F 23.6° / 33.3° 307.3
Aug 26.9°C / 80°F 23° / 32.6° 364.9
Sep 27°C / 81°F 21.8° / 33° 311.6
Oct 24.7°C / 77°F 16.7° / 32.4° 122.2
Nov 22.8°C / 73°F 13.8° / 31.4° 18.7
Dec 18.9°C / 66°F 8.4° / 29.4° 4.0
Si Wilai has a warm climate with an average annual temperature of 77°F (25°C). Winters average 70°F in January while summers reach 83°F in July / relatively mild seasonal variation. The area gets 322 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 99.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 574 feet.

Temperature

70°F Jan (21°C) 83°F Jul (28°C)
Annual Average76.6°F
42% above Thailand avg
January Average70°F (21°C)
July Average83°F (28°C)
Sunny Days322 days/yr

Geography

Elevation574 ft (175 m)
Area593.9 sq mi (1,538.3 km²)
Population Density19/sq mi
Coordinates18.1819°N, 103.7479°W
TimezoneAsia/Bangkok

Precipitation & Snow

Annual Rainfall 99.8"
163% above Thailand avg
Snowfall 0.0"
Wettest Month (Jul) 23.30"
Driest Month (Jan) 0.20"

Air Quality

Earthquake History

1 earthquake (M2.5+) within 150 km since 1990. Strongest: M4.5. Most recent: M4.5 on May 26, 2015.

May 26, 2015 73 km ESE of Muang Phônsavan, Laos M4.5 112 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

12 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 2. Most recent: Kajiki (2025).

Year Name Category Closest
2025 Kajiki Category 2 211 km
2025 Bualoi Category 1 259 km
2017 Doksuri Category 1 167 km
2013 Wutip Category 1 126 km
2007 Lekima Category 1 293 km
1996 Niki Category 1 281 km
1995 Lois Category 1 217 km
1991 Fred Category 1 271 km
1990 Becky Category 1 294 km
1989 Brian Category 1 288 km
1985 Cecil Category 1 267 km
1982 Nancy Category 1 215 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 70°F (21°C) 0.2 in Driest
February 70°F (21°C) 0.8 in
March 75°F (24°C) 2.3 in
April 79°F (26°C) 4.1 in
May 82°F (28°C) 14.8 in
June 83°F (29°C) 20.0 in Warmest
July 83°F (28°C) 23.3 in Wettest
August 82°F (28°C) 22.9 in
September 80°F (27°C) 13.6 in
October 78°F (25°C) 3.6 in
November 73°F (23°C) 0.8 in
December 68°F (20°C) 0.2 in Coldest

Si Wilai has a seasonal temperature swing of 15°F / from 68°F in December to 83°F in June. Total annual precipitation is 106.6 inches, with July being the wettest month (23.3") and January the driest (0.2").

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Farmers Markets in Si Wilai

NameAddressSeasonHoursOrganicWebsite
Market

Cafes in Si Wilai

3 cafes within city radius — OpenStreetMap data

Café Amazon
Café Amazon
ล้านหน้าโรงเรียน

Clinics in Si Wilai

1 clinics within city radius — OpenStreetMap data

Subdistrict Health Promoting Hospital

Gas Stations in Si Wilai

5 gas stations within city radius — OpenStreetMap data

PTT
TH #12232855980
TH #13719987090
TH #6177379174
TH #6177385752

Airports Near Si Wilai

1 airports within the area.

AirportIATAType
Bird's Paradise AirparkSmall Airport

Churches & Religious Organizations in Si Wilai

2 religious organizations (IRS tax-exempt data).

NameAddress
Wat Pa Charoenporn
Wat Pa Charoenporn

Quick Facts

Timezone
Asia/Bangkok

🇹🇭 About Thailand

Capital Bangkok
Population 69,428,524
Area 514,000 km²
GDP (USD) $515,906,283,941
GDP per capita $7,195
HDI 0.803
Life expectancy 76.4 years
Internet users 89.5%
Urban population 60.9%
Currency THB (Baht)
Languages Thai
Calling code +66
TLD .th
Driving side left

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Frequently Asked Questions About Si Wilai

What is the population of Si Wilai?

Si Wilai has a population of 11,139 residents and is located in Thailand. The population density is 19 people per square mile, spread across 593.9 square miles.

What is the weather like in Si Wilai?

Si Wilai has a warm climate with an average annual temperature of 77°F (25°C). Winter temperatures average 70°F in January, while summers reach an average of 83°F in July. The area receives 322 sunny days per year, well above the national average of 205. Annual rainfall totals 99.8 inches.

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