ERTEN TARIM SINCE 1980 YEAR 46

AGRICULTURAL WEATHER

Weather across Antalya and its districts

Frost risk, rainfall probability and storm warnings — at the level of detail a grower needs. Seven-day forecasts and night-by-night frost assessment for 14 districts.

District: Demre

Elevation: 12 m

Tonight between 18:00 and 09:00

No frost expected

Night temperatures stay clearly above the frost threshold.

25,2 °C
lowest around 05:00
38%
Cloud cover
8
Wind km/s

Rain next 24 hours

No rain expected

No meaningful rain is forecast for the next 24 hours; peak probability 0%. No weather obstacle to harvesting or spraying.

0,0 mm
Expected total
0%
Peak probability

Demre — Next 24 hours

19:00 29° 0%
20:00 28° 0%
21:00 28° 0%
22:00 28° 0%
23:00 27° 0%
00:00 26° 0%
01:00 26° 0%
02:00 25° 0%
03:00 25° 0%
04:00 25° 0%
05:00 25° 0%
06:00 25° 0%
07:00 25° 0%
08:00 26° 0%
09:00 27° 0%
10:00 28° 0%
11:00 29° 0%
12:00 30° 0%
13:00 30° 0%
14:00 30° 0%
15:00 30° 0%
16:00 30° 0%
17:00 29° 0%
18:00 28° 0%

under 25% · low 25–60% · possible over 60% · likely

Bar height shows the chance of rain in that hour. When 0.1 mm or more is expected, the amount is printed below the bar.

Demre — Spraying window

Suitable 00:00 – 19:00

19 hours uninterrupted

Delta T is the gap between dry-bulb and wet-bulb temperature. It shows how much a droplet evaporates before it reaches the target: too high and the spray evaporates and drifts as vapour, too low and the droplet stays suspended instead of settling.

19:00 5,1 5 km/s Suitable
20:00 4,7 4 km/s Suitable
21:00 4,2 2 km/s Marginal still air — inversion risk
22:00 4,1 2 km/s Marginal still air — inversion risk
23:00 3,8 2 km/s Marginal still air — inversion risk
00:00 3,6 5 km/s Suitable
01:00 3,0 4 km/s Suitable
02:00 3,0 3 km/s Suitable
03:00 3,2 4 km/s Suitable
04:00 3,1 4 km/s Suitable
05:00 2,8 5 km/s Suitable
06:00 2,4 6 km/s Suitable
07:00 2,1 6 km/s Suitable
08:00 2,0 5 km/s Suitable
09:00 2,8 7 km/s Suitable
10:00 4,0 9 km/s Suitable
11:00 4,2 10 km/s Suitable
12:00 4,7 10 km/s Suitable
13:00 5,2 11 km/s Suitable
14:00 5,4 12 km/s Suitable
15:00 4,9 10 km/s Suitable
16:00 5,6 9 km/s Suitable
17:00 6,1 7 km/s Suitable
18:00 6,0 3 km/s Suitable

Delta T °C · Wind km/s

Spraying thresholds

Delta T 2 – 8 °C
Ideal range. Droplets live long enough to reach the target.
Delta T 8 – 10 °C
Marginal. Workable with coarse droplets and low pressure; fine sprays are not advised.
Delta T above 10 °C
Droplets evaporate before reaching the target and the product drifts away as vapour. Do not apply.
Delta T below 2 °C
Air is saturated. Fine droplets stay airborne instead of settling, raising drift risk.
Wind 3 – 15 km/h
Ideal range. Drift starts above 15 km/h; above 20 km/h do not apply.
Wind below 3 km/h
Still air is not safe: under a clear sky a temperature inversion forms and fine droplets travel sideways instead of settling.
Rain
If 0.2 mm or more is expected during the hour of application or the two hours after it, the product washes off.

Thresholds follow the Montana State University Extension guidance on pesticide drift. Wet-bulb temperature is computed with the Stull (2011) approximation.

Demre — Seven-day forecast

Scroll the table sideways

Seven-day forecast — Demre
Day Low High Rain Probability Wind sust./gust Warning
13.09 Sunday 25,3 °C 30,8 °C 0,0 mm 0% 9/18 km/s
14.09 Monday 25,2 °C 30,1 °C 0,0 mm 0% 11/19 km/s
15.09 Tuesday 24,7 °C 30,7 °C 0,0 mm 0% 11/19 km/s
16.09 Wednesday 23,2 °C 29,8 °C 0,0 mm 6% 11/20 km/s
17.09 Thursday 23,6 °C 27,6 °C 0,6 mm 48% 8/17 km/s
18.09 Friday 23,1 °C 30,9 °C 0,0 mm 5% 13/27 km/s
19.09 Saturday 23,7 °C 31,2 °C 0,0 mm 4% 11/25 km/s

General sensitivity thresholds

These are widely accepted reference ranges in the sector; they vary with variety, growth stage and the position of the orchard.

Greenhouse vegetables (tomato, pepper, aubergine, cucumber)
Chilling injury can occur between 0 and 2 °C even without frost, leaving marks on leaves and fruit.
Citrus (lemon, orange, mandarin)
Fruit damage generally begins below −2 °C. Lemon is the most sensitive of the group; tree age and fruit maturity are decisive.
Fruit trees in blossom or new growth
Blossom can be damaged between −1 and −2 °C. The same tree tolerates far lower temperatures while dormant.
Leafy vegetables (lettuce, broccoli, cabbage)
Tolerate brief light frost; prolonged frost damages leaf margins.
Rain before harvest
Cracking in cherry and plum; prolonged leaf wetness raises fungal disease risk in tomato and pepper. Rain shortly after spraying reduces effectiveness.
Storm
Spray drift starts above 15 km/h sustained wind. Fruit drop becomes likely at 50 km/h gusts; above 70 km/h, greenhouse film and support structures are at risk.

What this page is and is not

These values come from weather forecast models: they are predictions, not measurements, and they can be wrong. The frost assessment is a simple calculation based on temperature, cloud cover and wind — it does not know whether your orchard sits in a hollow or on a ridge, your soil moisture, or how hardy your variety is. Two plots in the same district can differ by several degrees. Decisions about heating, covering or spraying should be made with your own measurements and your agronomist, not from the figure shown here.

Source: Open-Meteo forecast models