Planning polyhouse farming in Thoothukudi? Thoothukudi is a large city in Thoothukudi district, Tamil Nadu, home to about 4.1 lakh people (GeoNames)[1][2], about 470 km from Bengaluru. Below we use the town's monthly temperatures, humidity and rainfall to work out which structure fits, which crops to grow and in which months, before you spend on construction.
Climate for polyhouse farming in Thoothukudi
March is the hottest month in Thoothukudi, with average daily highs of about 35°C. January has the coolest nights, averaging 21°C.[3] The area gets about 1,053 mm of rain a year. The wettest months are September to November, peaking in October at about 224 mm. Average humidity stays at 75% or more in October to January, which raises the risk of leaf disease and slows evaporative cooling. Thoothukudi sits about 4 m above sea level.[2] On the Köppen–Geiger climate map, Thoothukudi falls in the tropical savanna (dry summer) zone (As).[4]
Thoothukudi climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
30.4
20.7
75
13
Feb
33.1
21.9
67
15
Mar
34.8
24.1
64
35
Apr
34.8
25.8
67
70
May
33.7
25.9
72
99
Jun
32.4
24.8
74
72
Jul
32.2
24.3
73
69
Aug
32.5
24.1
73
60
Sep
32.6
24.2
73
101
Oct
31.0
24.1
79
224
Nov
28.8
23.1
85
224
Dec
28.6
21.6
84
71
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Thoothukudi. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Thoothukudi
1
Year-round crops
Under cover, cucumber can be grown for 10 months a year in Thoothukudi, so you can supply buyers every week instead of one open-field season.
2
Better yield and price
Plants grow without rain, hail and wind damage, so yields are higher and more even, and clean, graded produce sells at a better price, especially off-season.
3
Less water
Drip irrigation under cover uses less water than flood irrigation, and the roof keeps October's 224 mm of rain off the crop and the soil.
4
Less pesticides
Insect net on vents and doors keeps out most pests, and controlled ventilation helps with leaf disease in the humid months (October to January), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Tamil Nadu can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[5]
Which polyhouse suits Thoothukudi?
For polyhouse farming in Thoothukudi, the structure decides which months you can crop and what it costs to run. In Thoothukudi the heat comes with humidity: during February to May average humidity is about 68%. Wet pads cool much less in humid air: on a typical March afternoon they would only bring 35°C down to about 31°C. So we usually start with a tall naturally ventilated polyhouse with wide roof vents, insect net and a shade screen. A Fan & Pad polyhouse still makes sense if buyers need lettuce through the hottest months, but expect a smaller temperature drop than in dry inland towns.
Plan for heavy rain in October (about 224 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in March at about 6.4 kWh per m² a day, so add a shade screen for leafy greens in the brightest months. A nethouse, the lowest-cost option, can grow hardy crops in December to February and May to August, when it is mild and fairly dry.
Crops for Thoothukudi
Based on Thoothukudi's climate, the crops with the longest growing windows are cucumber (10 months), chilli pepper (8 months) and brinjal (8 months). Cucumber fits May to February in a naturally ventilated polyhouse. Lilium and chrysanthemum are hard to time here, so we would leave them out of the first season. These are the crops we would plan first for polyhouse farming in Thoothukudi.
Months each crop suits in Thoothukudi
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Oct–Jan
All year
Tomato
Oct–Jan
Jun–Mar
Cucumber
May–Feb
All year
Chilli pepper
Jun–Jan
All year
Brinjal
Jun–Jan
All year
Lettuce
Difficult
Jul–Feb
Broccoli
Difficult
Difficult
Strawberry
Difficult
Difficult
Rose
Difficult
Jan
Gerbera
Difficult
Nov–Feb
Carnation
Difficult
Difficult
Chrysanthemum
Difficult
Jan
Anthurium
Nov–Dec
All year
Orchids
Nov–Dec
All year
Lilium
Difficult
Difficult
Kryzen planning estimate from the monthly averages above and each crop's usual day and night temperature range. Variety, soil or substrate temperature and shading change the result, so confirm with a trial.
₹8,325Spending per person per month, urban Tamil Nadu, 2023–24[6]
470 kmto Bengaluru, the nearest metro (straight line)
Urban households in Tamil Nadu spent an average of ₹8,325 per person per month in 2023–24, above the all-India urban average of ₹7,078.[6] Thoothukudi is large enough for steady local sales to restaurants, hotels and fruit-and-vegetable retailers. Start with a farm size that matches the orders you can confirm. Tirunelveli, about 50 km away, is the nearest larger market on our list.
Polyhouse farming in Thoothukudi with Kryzen
We have built 9 projects in Tamil Nadu so far (see our project map (opens in a new tab)). Thoothukudi is about 1,120 km in a straight line from our factory and master warehouse at Degaon, Wai (Satara), our nearest site.
Towns near Thoothukudi
We also plan and build farms in these towns near Thoothukudi:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Thoothukudi: FAQs
Can a polyhouse farm run all year in Thoothukudi?
Yes, with the right structure. For Thoothukudi we would plan a tall naturally ventilated polyhouse with wide vents and insect net. Even then, lettuce is hard to grow in March to June, so plan another crop for those months.
Which polyhouse is best for Thoothukudi?
With March highs of about 35°C and 64% average humidity in that month, we would start with a tall naturally ventilated polyhouse with wide vents and insect net.
Which crops should I grow in a polyhouse in Thoothukudi?
Going by the monthly climate, capsicum, cucumber and chilli pepper have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Thoothukudi?
It can be, if the crop, the structure and the buyers match. In Thoothukudi, cucumber and chilli pepper have the longest seasons under cover. Confirm prices and volumes with buyers first; our Detailed Project Report works out the cost, yield and returns for your plot.
Does Kryzen build polyhouses in Thoothukudi?
Yes. Our nearest site is our factory and master warehouse at Degaon, Wai (Satara), about 1,120 km away, and we have built 9 projects in Tamil Nadu.
Is there a subsidy for polyhouse or hydroponic farms in Tamil Nadu?
Yes. Protected cultivation projects in Tamil Nadu can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department. Check the current rate and area limit when you apply.
Discuss your Thoothukudi farm project
Share your plot location, water test and crop targets. We will suggest the right structure and growing system, and send an itemised quotation.
A computer engineer turned hydroponic farmer from a multigenerational farming family in Satara. Sudhir founded Kryzen in 2019, and the team has since built 350+ protected and hydroponic farms across India.
