# Onegama GN division, Thamankaduwa DS Division – Villages & Map

> Source: https://wherepedia.org/sri-lanka/north-central/polonnaruwa/thamankaduwa/onegama/

Grama Niladhari division · Thamankaduwa DS Division 

# Onegama

Onegama is a Grama Niladhari (GN) division of Sri Lanka in Thamankaduwa DS Division, Polonnaruwa District, North Central Province. It covers **2.72 km²**. 1 named village or locality is recorded here.

- 2.7km²

## Where is Onegama?

Onegama lies in [Thamankaduwa DS Division](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/thamankaduwa/), [Polonnaruwa District](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/), [North Central Province](https://wherepedia.org/sri-lanka/north-central/), [Sri Lanka](https://wherepedia.org/sri-lanka/). It borders 4 other GN divisions: [Kalinga Ela](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/thamankaduwa/kalinga-ela/), [Onegama Muslimgama](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/lankapura/onegama-muslimgama/), [Sinharajapura](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/thamankaduwa/sinharajapura/) and [Thambala](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/lankapura/thambala/). By area it is the 5408th largest of 13,978 GN divisions in Sri Lanka. It covers 0.6% of [Thamankaduwa DS Division](https://wherepedia.org/sri-lanka/north-central/polonnaruwa/thamankaduwa/). The centre of Onegama is about 181 km in a straight line from Colombo, the commercial capital. The centre point is at 7.9944° N, 81.0937° E. Local names: ඕනෑගම .

Source: [Survey Department of Sri Lanka via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-lka).

## Things to see in and around Onegama

### Nearby, outside Onegama

- Flood Plains National Park · nature reserve, Pudur5.5 km
- Tivanka Image House · attraction, Nishshankamallapura9.8 km
- Demala Maha Seya · attraction, Nishshankamallapura10 km
- Lotus Pond · attraction, Nishshankamallapura10 km
- Damila Thupa · attraction, Nishshankamallapura10 km
- Ancient Auditorium · ruins, Nishshankamallapura10 km
- Baddha Sima Malakaya · ruins, Bendiwewa11 km
- Hall · ruins, Bendiwewa11 km
- Alahana Pirivena · archaeological site, Bendiwewa11 km
- Monk's Cell · ruins, Bendiwewa11 km
- Monastic Hospital · ruins, Bendiwewa11 km
- Shiva Devale No 2 · attraction, Ethumalpitiya11 km

Source: [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright).

Named attractions, museums, viewpoints, historic sites and natural features mapped in OpenStreetMap. Places of worship are not listed.

## Know before you go: Onegama

- Time zoneUTC+5:30, no daylight saving · Asia/Colombo
- CurrencyRupee (LKR)
- Country calling code+94
- LanguagesSinhala, Tamil, English
- Plug typesType D, G · 230 V
- Driving sideLeft
- Postcode format5 digits (#####)

### Nearest airports

- China Bay Airport (TRR) · Trincomalee61 km
- Batticaloa International Airport (BTC) · Batticaloa72 km

### Nearest railway station

Parakum Uyana (Laksha Uyana), about 8.7 km from the centre.

### Daylight

Days are longest in Jun (about 12.6 hours, sunrise around 05:48) and shortest in Dec (about 11.7 hours, sunrise around 06:10, sunset around 17:50).

Source: [GeoNames country and time-zone files (CC BY 4.0)](https://www.geonames.org/); [Wikidata (CC0) — plug types, mains voltage, driving side; retrieved 2026-11-02](https://www.wikidata.org/); [OurAirports (public domain)](https://ourairports.com/data/).

Airports with scheduled passenger flights; straight-line distances. Daylight is calculated for the 15th of each month in local standard time. Check entry and visa rules with official government sources before travelling.

## Villages and localities in Onegama

Open gazetteers list **1 village, town or locality** in Onegama.

- 14 Canal

Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright).

## Weather in Onegama and the best time to visit

Using the climate of Polonnaruwa District, the warmest month is May (average 29 °C) and the coolest is Jan (25 °C). About 1,664 mm of rain falls in a year; the wettest month is Dec (331 mm) and the driest Jun (35 mm). The most comfortable months for a visit are **February to March**.

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

Month Average °C Rain mm 

Jan 25 152 

Feb 26 113 

Mar 27 86 

Apr 28 120 

May 29 106 

Jun 28 35 

Jul 28 37 

Aug 29 50 

Sep 29 80 

Oct 28 222 

Nov 26 331 

Dec 25 331 

Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/).

## Nearest hospital, bank and fuel from Onegama

Need Nearest mapped Distance 

Hospital Nephrology Hospital - Polonnaruwa · Manampitiya East 8.6 km [Map](https://www.openstreetmap.org/?mlat=7.92602&mlon=81.13029#map=17/7.92602/81.13029) 

Bank Sanasa Development Bank · Kaduruwela West 9.7 km [Map](https://www.openstreetmap.org/?mlat=7.93411&mlon=81.03039#map=17/7.93411/81.03039) 

ATM HNB · Polonnaruwa Town 11 km [Map](https://www.openstreetmap.org/?mlat=7.94256&mlon=81.00957#map=17/7.94256/81.00957) 

Petrol pump Lanka IOC · Kaduruwela West 9.8 km [Map](https://www.openstreetmap.org/?mlat=7.93542&mlon=81.02815#map=17/7.93542/81.02815) 

Hotel Hotel Summer Haven · Palugasdamana North 7.7 km [Map](https://www.openstreetmap.org/?mlat=7.96797&mlon=81.02923#map=17/7.96797/81.02923) 

Mall New Nusky Jewellers · Kaduruwela West 9.7 km [Map](https://www.openstreetmap.org/?mlat=7.93363&mlon=81.03071#map=17/7.93363/81.03071) 

School Nagenahira East Primary School · Palugasdamana 02 Ela 7.3 km [Map](https://www.openstreetmap.org/?mlat=7.96168&mlon=81.03572#map=17/7.96168/81.03572) 

College VTA Polonnaruwa · Perakum Pedesa 9.5 km [Map](https://www.openstreetmap.org/?mlat=7.93359&mlon=81.03365#map=17/7.93359/81.03365) 

Police station Kaduruwela · Kaduruwela West 9.9 km [Map](https://www.openstreetmap.org/?mlat=7.92453&mlon=81.03745#map=17/7.92453/81.03745) 

Source: [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/).

Straight-line distance from the centre of the division, within 40 km.

## Other GN divisions in Thamankaduwa DS Division

- Aluthwewa East
- Aluthwewa West
- Ambanganga
- Bendiwewa
- Damana Gemunupura
- Divulana
- Ethumalpitiya
- Gallalla East
- Gallella West
- Galthambarawa
- Ganangolla
- Kadawalawewa
- Kaduruwela East
- Kaduruwela South
- Kaduruwela West
- Kalahagala
- Kalinga Ela
- Kotaleeya
- Kuruppu Junction
- Laksha Uyana
- Mahasen Pedesa
- Mahaweli Pedesa
- Manikkampattiya
- Medamaluwa
- Monarathenna
- Nelumvila
- Nikawewa
- Nishshankamalla Pedesa
- Nishshankamallapura
- Palugasdamana 01 Ela
- Palugasdamana 02 Ela
- Palugasdamana 03 Ela
- Palugasdamana North
- Palugasdamana South
- Parakrama Samudraya
- Perakum Pedesa
- Polonnaruwa Town
- Pothgul Pedesa
- Pudur
- Pulathisi Pedesa
- Samudragama
- Sevagama
- Shanthipura
- Sinha Udagama
- Sinhapura
- Sinharajapura
- Sirisangabo Pedesa
- Thopawewa
- Udawela
- Unagalavehera South
- Weera Pedesa
- Wewethenna
- Wijayabahupura
- Wijayarajapura

## Quick answers

- Where is Onegama?In Thamankaduwa DS Division, Polonnaruwa District, North Central Province, Sri Lanka
- What borders Onegama?Kalinga Ela, Onegama Muslimgama, Sinharajapura and Thambala
- What is there to see in Onegama?Flood Plains National Park, Tivanka Image House, Demala Maha Seya, Lotus Pond
- What time zone is Onegama in?UTC+5:30
- What currency is used in Onegama?Rupee (LKR)
- What language is spoken in Onegama?Sinhala, Tamil, English (main languages nationally)
- How many villages are in Onegama?1 named settlements (GeoNames, OpenStreetMap)
- What is the best time to visit Onegama?February to March
- Where is the nearest hospital to Onegama?Nephrology Hospital - Polonnaruwa, about 8.6 km from the centre
- Where is the nearest bank to Onegama?Sanasa Development Bank, about 9.7 km from the centre
- Where is the nearest ATM to Onegama?HNB, about 11 km from the centre
- Where is the nearest petrol pump to Onegama?Lanka IOC, about 9.8 km from the centre
- What is the P-code of Onegama?LK7215055 (OCHA common operational dataset)