| Thirumalaisamudram | |
| Settlement Type: | village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Thanjavur |
| Subdivision Type3: | Taluk |
| Subdivision Name3: | Thanjavur |
| Subdivision Type4: | PIN Code |
| Subdivision Name4: | 613401 |
| Leader Title: | Panchayat President |
| Unit Pref: | Metric |
| Elevation M: | 60 |
| Population Total: | 6783 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code: | 613401 |
| Registration Plate: | TN-49 |
Thirumalaisamudram is a village in Thanjavur taluk of Thanjavur district, Tamil Nadu. It is located at a distance of 17 kilometres west of Thanjavur, 5 kilometres from Vallam and 39 kilometres east of Tiruchirapalli on the Thanjavur-Tiruchirapalli highway of National Highway 83 (India). It adjoins the neighbouring village of Vallam Pudursethi.
Thirumalaisamudram has risen in importance due to the emergence of SASTRA University. The university covers most of the north-eastern part of the village. There are also a number of tea shops and restaurants adjoining the college.
Thirumalaisamudram is located at [1] The tributaries of river Cauvery, namely, the Grand Anaicut canal (Pudhaaru), Vadavaaru and Vennaaru rivers flow through the city. Thirumalaisamudram is situated in the Cauvery delta, at a distance of 364km (226miles) south-west of Chennai,44.7km (27.8miles) east of Tiruchirappalli and 17.9km (11.1miles). To the south of Thanjavur city, is the Vallam tableland, a small plateau interspersed at regular intervals by ridges of sandstone.[2] The nearest seaport is Nagapattinam which is 103km (64miles) east of Thanjavur. The nearest airport is Tiruchirapalli International Airport, located at a distance of 44.7km (27.8miles). The nearest railhead is Thanjavur Junction railway station, located at a distance of 22.2km (13.8miles). The city has an elevation of 60m (200feet) above mean sea level.The period from November to February in Thirumalaisamudram is pleasant, with a climate full of warm days and cool nights. The onset of summer is from March, with the mercury reaching its peak by the end of May and June. The average temperatures range from 81°F in January to 97°F in May and June. Summer rains are sparse and the first monsoon, the South-West monsoon, commences in June and continues till September. North-East monsoon begins October and continues till January. The rainfall during the South-West monsoon period is much lower than that of the North-East monsoon. The North-East monsoon is beneficial to the district at large because of the heavy rainfall and the Western ghats (mountain ranges) feeding the river Cauvery. The average rainfall is 37inches, most of which is contributed by the North-East monsoon.
As per the 2011 census, Thirumalaisamudram had a population of 6,783 with 4020 males and 2763 females. The sex ratio was 687 and the literacy rate, 94.88 with Males 97.41 and Females 91.21.