Planning polyhouse farming in Guwahati? Guwahati is a large city in Kamrup Metropolitan district, Assam, home to about 9.6 lakh people (GeoNames)[1][2], about 530 km from Kolkata. 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 Guwahati
June is the hottest month in Guwahati, with average daily highs of about 35°C. January has the coolest nights, averaging 10°C.[3] The area gets about 2,012 mm of rain a year, most of it in April to October, peaking in June at about 374 mm. Average humidity stays at 75% or more in May to January, which raises the risk of leaf disease and slows evaporative cooling. Guwahati sits about 51 m above sea level.[2] On the Köppen–Geiger climate map, Guwahati falls in the humid subtropical with dry winters zone (Cwa).[4]
Guwahati climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
23.3
9.7
76
7
Feb
26.5
11.9
69
21
Mar
31.0
15.9
61
59
Apr
33.4
20.5
68
230
May
34.2
23.0
75
286
Jun
34.5
25.1
80
374
Jul
34.0
25.5
83
364
Aug
33.8
25.4
84
286
Sep
32.6
24.2
85
228
Oct
30.7
20.8
83
135
Nov
27.4
15.7
81
14
Dec
24.3
11.8
81
8
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Guwahati, adjusted for the town's elevation[5]. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Guwahati
1
Year-round crops
A polyhouse stretches the season: in Guwahati cucumber can be grown for about 7 months a year under cover, longer than in the open field.
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 June's 374 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 (May to January), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Assam can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[6]
Which polyhouse suits Guwahati?
For polyhouse farming in Guwahati, the structure decides which months you can crop and what it costs to run. In Guwahati the heat comes with humidity: during April to August average humidity is about 78%. Wet pads cool much less in humid air: on a typical June afternoon they would only bring 35°C down to about 33°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 June (about 374 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. A nethouse, the lowest-cost option, can grow hardy crops in February to March and November to December, when it is mild and fairly dry.
Crops for Guwahati
Based on Guwahati's climate, the crops with the longest growing windows are cucumber (7 months), tomato (6 months) and chilli pepper (6 months). Cucumber fits March to April and July to November in a naturally ventilated polyhouse. Lilium and orchids 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 Guwahati.
Months each crop suits in Guwahati
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Feb–Mar and Oct–Dec
Feb–Dec
Tomato
Oct–Mar
All year
Cucumber
Mar–Apr and Jul–Nov
Mar–Nov
Chilli pepper
Feb–Mar and Sep–Dec
Feb–Dec
Brinjal
Mar and Sep–Nov
Mar–Nov
Lettuce
Nov–Feb
Oct–Mar
Broccoli
Jan
Dec–Feb
Strawberry
Dec–Jan
Dec–Feb
Rose
Nov–Feb
Oct–Mar
Gerbera
Nov–Feb
Oct–Mar
Carnation
Dec–Jan
Nov–Mar
Chrysanthemum
Nov–Feb
Oct–Mar
Anthurium
Nov
Mar–May and Sep–Nov
Orchids
Nov
Mar–May and Sep–Nov
Lilium
Jan
Dec–Feb
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.
₹6,913Spending per person per month, urban Assam, 2023–24[7]
530 kmto Kolkata, the nearest metro (straight line)
Urban households in Assam spent an average of ₹6,913 per person per month in 2023–24, close to the all-India urban average of ₹7,078.[7] Guwahati 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 Guwahati with Kryzen
We have built 2 projects in Assam so far (see our project map (opens in a new tab)). Guwahati is about 1,820 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Guwahati
We also plan and build farms in these towns near Guwahati:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Guwahati: FAQs
Can a polyhouse farm run all year in Guwahati?
Yes, with the right structure. For Guwahati we would plan a tall naturally ventilated polyhouse with wide vents and insect net. Even then, lettuce is hard to grow in April to September, so plan another crop for those months.
Which polyhouse is best for Guwahati?
With June highs of about 35°C and 80% 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 Guwahati?
Going by the monthly climate, tomato, capsicum and chilli pepper have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Guwahati?
It can be, if the crop, the structure and the buyers match. In Guwahati, cucumber and tomato 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 Guwahati?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,820 km away, and we have built 2 projects in Assam.
Is there a subsidy for polyhouse or hydroponic farms in Assam?
Yes. Protected cultivation projects in Assam 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 Guwahati 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.
