Planning polyhouse farming in Jamnagar? Jamnagar is a large city in Jamnagar district, Gujarat, home to about 4.8 lakh people (Census 2011)[1], about 260 km from Ahmedabad. 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 Jamnagar
May is the hottest month in Jamnagar, with average daily highs of about 35°C. January has the coolest nights, averaging 14°C.[2] The area gets about 640 mm of rain a year, most of it in July to September, peaking in July at about 216 mm. Average humidity stays at 75% or more in July to September, which raises the risk of leaf disease and slows evaporative cooling. Jamnagar sits about 17 m above sea level.[1] On the Köppen–Geiger climate map, Jamnagar falls in the hot semi-arid zone (BSh).[3]
Jamnagar climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
26.4
14.1
49
1
Feb
28.8
16.1
51
0
Mar
32.3
19.7
55
1
Apr
35.0
23.1
60
2
May
35.2
26.0
66
3
Jun
34.0
27.8
70
83
Jul
31.4
26.8
79
216
Aug
30.2
25.7
82
200
Sep
31.0
25.0
78
116
Oct
33.0
23.4
65
10
Nov
31.1
20.0
55
8
Dec
27.7
15.8
51
0
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Jamnagar. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Jamnagar
1
Year-round crops
Under cover, cucumber can be grown for 10 months a year in Jamnagar, 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
With only about 640 mm of rain a year here, drip irrigation under cover saves water: less is lost to evaporation and run-off than in the open field.
4
Less pesticides
Insect net on vents and doors keeps out most pests, and controlled ventilation helps with leaf disease in the humid months (July to September), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Gujarat can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[4]
Which polyhouse suits Jamnagar?
For polyhouse farming in Jamnagar, the structure decides which months you can crop and what it costs to run. In Jamnagar the heat comes with humidity: during April to June and October average humidity is about 65%. Wet pads cool much less in humid air: on a typical May 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 July (about 216 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank. Sunlight peaks in May at about 7.4 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 October to March and June, when it is mild and fairly dry.
Crops for Jamnagar
Based on Jamnagar's climate, the crops with the longest growing windows are cucumber (10 months), chilli pepper (9 months) and brinjal (9 months). Cucumber fits June to March in a naturally ventilated polyhouse. Lilium and carnation 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 Jamnagar.
Months each crop suits in Jamnagar
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Dec–Feb and Aug–Sep
Aug–May
Tomato
Dec–Feb and Sep
Sep–Apr
Cucumber
Jun–Mar
All year
Chilli pepper
Jul–Mar
Jul–May
Brinjal
Jul–Mar
Jul–May
Lettuce
Dec–Jan
Oct–Mar
Broccoli
Difficult
Dec–Feb
Strawberry
Difficult
Jan
Rose
Dec–Jan
Nov–Mar
Gerbera
Dec–Jan
Oct–Mar
Carnation
Difficult
Dec–Feb
Chrysanthemum
Dec–Jan
Nov–Mar
Anthurium
Feb and Dec
Feb–May and Jul–Dec
Orchids
Feb and Dec
Feb–May and Jul–Dec
Lilium
Difficult
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.
₹7,198Spending per person per month, urban Gujarat, 2023–24[5]
260 kmto Ahmedabad, the nearest metro (straight line)
Urban households in Gujarat spent an average of ₹7,198 per person per month in 2023–24, close to the all-India urban average of ₹7,078.[5] Jamnagar 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. Rajkot, about 80 km away, is the nearest larger market on our list.
Polyhouse farming in Jamnagar with Kryzen
We have built 12 projects in Gujarat so far (see our project map (opens in a new tab)). Jamnagar is about 470 km in a straight line from our Nashik warehouse, our nearest site.
Towns near Jamnagar
We also plan and build farms in these towns near Jamnagar:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Jamnagar: FAQs
Can a polyhouse farm run all year in Jamnagar?
Yes, with the right structure. For Jamnagar 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 Jamnagar?
With May highs of about 35°C and 66% 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 Jamnagar?
Going by the monthly climate, cucumber, chilli pepper and brinjal have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Jamnagar?
It can be, if the crop, the structure and the buyers match. In Jamnagar, 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 Jamnagar?
Yes. Our nearest site is our Nashik warehouse, about 470 km away, and we have built 12 projects in Gujarat.
Is there a subsidy for polyhouse or hydroponic farms in Gujarat?
Yes. Protected cultivation projects in Gujarat 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 Jamnagar 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.
