Planning polyhouse farming in Ruwais? Ruwais is in the emirate of Abu Dhabi, United Arab Emirates[1]. This guide works from Ruwais's own monthly climate to suggest the protected structure, the crops to start with, and the months each crop is likely to do well.
Climate for polyhouse farming in Ruwais
August is the hottest month in Ruwais, with average daily highs of about 41°C. January has the coolest nights, averaging 15°C.[2] Rain is scarce: about 33 mm a year. Water for the farm will come from a borewell, well, tanker or municipal supply, so test its salts (EC) and hardness before choosing the system. Ruwais sits about 16 m above sea level.[1] On the Köppen–Geiger climate map, Ruwais falls in the hot desert zone (BWh).[3]
Ruwais climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
22.5
15.0
61
6
Feb
24.3
15.5
58
3
Mar
28.0
18.2
52
7
Apr
32.6
22.4
46
4
May
37.5
26.6
42
0
Jun
39.5
28.6
45
0
Jul
41.0
30.7
46
0
Aug
41.2
31.1
49
0
Sep
38.9
29.4
50
0
Oct
35.0
26.2
52
1
Nov
29.4
22.4
57
5
Dec
24.6
17.8
63
7
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Ruwais. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Ruwais
1
Year-round crops
Under cover, cucumber can be grown for 10 months a year in Ruwais, 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 33 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, so you spray less often.
Which polyhouse suits Ruwais?
For polyhouse farming in Ruwais, the structure decides which months you can crop and what it costs to run. The heat in Ruwais comes with dry air. In June to September, average highs reach 41°C while average humidity is only about 48%. In that dry air, wet pads can bring a 41°C August afternoon down to roughly 34°C inside a Fan & Pad polyhouse, which keeps herbs and vine crops going; lettuce will still struggle in the hottest weeks. For vine crops such as capsicum and cucumber, a naturally ventilated polyhouse with a shade screen works from November to March and costs less to run.
Sunlight peaks in June at about 7.1 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 February to April and November to December, when it is mild and fairly dry.
Crops for Ruwais
Based on Ruwais's climate, the crops with the longest growing windows are cucumber (10 months), chilli pepper (8 months) and brinjal (8 months). Cucumber fits September to June with Fan & Pad cooling. 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 Ruwais.
Months each crop suits in Ruwais
Crop
Naturally ventilated polyhouse
With Fan & Pad cooling
Capsicum
Nov–Mar
Oct–Apr
Tomato
Nov–Mar
Nov–Apr
Cucumber
Nov–Apr
Sep–Jun
Chilli pepper
Nov–Apr
Oct–May
Brinjal
Nov–Apr
Oct–May
Lettuce
Dec–Mar
Nov–Apr
Broccoli
Jan
Jan–Feb
Strawberry
Jan–Feb
Jan–Feb
Rose
Dec–Mar
Dec–Mar
Gerbera
Dec–Mar
Nov–Apr
Carnation
Jan–Feb
Jan–Feb
Chrysanthemum
Dec–Mar
Dec–Mar
Anthurium
Feb–Mar and Nov–Dec
Feb–May and Oct–Dec
Orchids
Feb–Mar and Nov–Dec
Feb–May and Oct–Dec
Lilium
Jan
Jan–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.
Every project starts with your site data: plot size, water quality and the crops your buyers want. We review it with you online and prepare a project report before construction starts.
Towns near Ruwais
Check other locations in Abu Dhabi
We have farm planning pages for 5 towns in Abu Dhabi, each with its own climate, crops and market notes.
Yes, with the right structure. For Ruwais we would plan a Fan & Pad polyhouse for leafy greens. Even then, lettuce is hard to grow in May to October, so plan another crop for those months.
Which polyhouse is best for Ruwais?
With August highs of about 41°C and 49% average humidity in that month, we would start with a Fan & Pad polyhouse for leafy greens.
Which crops should I grow in a polyhouse in Ruwais?
Going by the monthly climate, cucumber, chilli pepper and brinjal have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Discuss your Ruwais 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.
