Planning polyhouse farming in Thiruvananthapuram? Thiruvananthapuram is a large city in Thiruvananthapuram district, Kerala, home to about 7.4 lakh people (Census 2011)[1], about 500 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 Thiruvananthapuram
March is the hottest month in Thiruvananthapuram, with average daily highs of about 33°C. January has the coolest nights, averaging 22°C.[2] The area gets about 1,795 mm of rain a year, most of it in April to November, peaking in October at about 291 mm. Average humidity stays at 75% or more in April to December, which raises the risk of leaf disease and slows evaporative cooling. Thiruvananthapuram sits about 10 m above sea level.[1] On the Köppen–Geiger climate map, Thiruvananthapuram falls in the tropical savanna (dry winter) zone (Aw).[3]
Thiruvananthapuram climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
30.1
22.3
72
16
Feb
32.2
23.4
66
21
Mar
32.8
25.2
67
53
Apr
31.4
26.4
75
123
May
29.7
26.5
82
202
Jun
28.1
25.6
87
249
Jul
27.3
24.6
89
188
Aug
27.4
24.5
89
162
Sep
27.7
24.6
87
206
Oct
28.0
24.7
85
291
Nov
28.3
24.3
83
222
Dec
28.5
23.0
80
62
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Thiruvananthapuram. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Thiruvananthapuram
1
Year-round crops
Under cover, cucumber can be grown for the whole year in Thiruvananthapuram, 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 291 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 (April to December), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Kerala can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[4]
Which polyhouse suits Thiruvananthapuram?
For polyhouse farming in Thiruvananthapuram, the structure decides which months you can crop and what it costs to run. With average highs between 27°C and 33°C through the year, Thiruvananthapuram suits a naturally ventilated polyhouse for most crops. Fan & Pad cooling is rarely needed; spend the budget on good ventilation, insect net and a shade screen. Plan for heavy rain in October (about 291 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 March, when it is mild and fairly dry.
Crops for Thiruvananthapuram
Based on Thiruvananthapuram's climate, the crops with the longest growing windows are cucumber (all year), chilli pepper (all year) and brinjal (all year). Cucumber fits all year 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 Thiruvananthapuram.
Months each crop suits in Thiruvananthapuram
Crop
Naturally ventilated polyhouse
Capsicum
May–Jan
Tomato
Jul–Jan
Cucumber
All year
Chilli pepper
All year
Brinjal
All year
Lettuce
Aug
Broccoli
Difficult
Strawberry
Difficult
Rose
Difficult
Gerbera
Difficult
Carnation
Difficult
Chrysanthemum
Difficult
Anthurium
May–Dec
Orchids
May–Dec
Lilium
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.
Selling your harvest in and around Thiruvananthapuram
7.4 lakhPeople in Thiruvananthapuram (Census 2011)[1]
₹7,834Spending per person per month, urban Kerala, 2023–24[5]
500 kmto Bengaluru, the nearest metro (straight line)
Urban households in Kerala spent an average of ₹7,834 per person per month in 2023–24, above the all-India urban average of ₹7,078.[5] Thiruvananthapuram 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.
Polyhouse farming in Thiruvananthapuram with Kryzen
Thiruvananthapuram is about 1,100 km in a straight line from our factory and master warehouse at Degaon, Wai (Satara), our nearest site.
Towns near Thiruvananthapuram
We also plan and build farms in these towns near Thiruvananthapuram:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Thiruvananthapuram: FAQs
Can a polyhouse farm run all year in Thiruvananthapuram?
Yes, with the right structure. For Thiruvananthapuram we would plan a naturally ventilated polyhouse. Even then, lettuce is hard to grow in March to July and September to October, so plan another crop for those months.
Which polyhouse is best for Thiruvananthapuram?
With March highs of about 33°C and 67% average humidity in that month, we would start with a naturally ventilated polyhouse.
Which crops should I grow in a polyhouse in Thiruvananthapuram?
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 Thiruvananthapuram?
It can be, if the crop, the structure and the buyers match. In Thiruvananthapuram, 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 Thiruvananthapuram?
Yes. Our nearest site is our factory and master warehouse at Degaon, Wai (Satara), about 1,100 km away.
Is there a subsidy for polyhouse or hydroponic farms in Kerala?
Yes. Protected cultivation projects in Kerala 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 Thiruvananthapuram 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.
