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SA Weather Service · Updated 09:02 SAST
All Cities › Rennes
Rennes
South Africa · -33.97°S, 25.5°E
20°
Partly CloudyFeels like 0°C
High: 21°
Low: 18°
Wind31 km/hENE (F5)
Humidity77%Very Dry
Rain 1h0.0 mm
Pressure1025 hPaSteady
Synoptic Summary
Current observations indicate partly cloudy conditions with air temperature 20°C, wind chill reduces apparent temperature to 0°C, surface wind ENE at 31 km/h (Beaufort 5), RH 77% with dew point 0°C (depression 20.2°C), MSL pressure 1025 hPa.
Current observations indicate partly cloudy conditions with air temperature 20°C, wind chill reduces apparent temperature to 0°C, surface wind ENE at 31 km/h (Beaufort 5), RH 77% with dew point 0°C (depression 20.2°C), MSL pressure 1025 hPa.
Hourly Forecast Next 24h · Scroll →
Now
20°
31
13:00
20°
31
14:00
21°
34
15:00
20°
39
16:00
20°
40
17:00
19°
38
18:00
19°
37
19:00
19°
38
20:00
19°
37
21:00
19°
37
22:00
19°
36
23:00
18°
36
00:00
18°
35
01:00
18°
35
02:00
18°
34
03:00
18°
33
04:00
17°
31
05:00
16°
28
06:00
16°
26
07:00
16°
24
08:00
16°
26
09:00
18°
23
10:00
19°
20
11:00
20°
1.0mm
19
7-Day Forecast Detailed outlook
Today
21°18°
0.5
40 km/h
Thu 21 May
22°16°
99.2
35 km/h
Fri 22 May
19°15°
0.6
37 km/h
Sat 23 May
19°14°
22 km/h
Sun 24 May
21°12°
12 km/h
Mon 25 May
20°14°
13 km/h
Tue 26 May
23°13°
6 km/h
Current Observations
Wind
31 km/h
ENE · Gusts 0 km/h · F5
UV Index
—
— · Burn time ~N/A
Humidity
77%
Dew point 0°C · Very Dry
Cloud Cover
51%
Partly cloudy
Pressure
1025 hPa
Steady · →
Feels Like
0°
Close to actual
Fire Danger
32
Moderate
Visibility
50 km
Good
Advanced Meteorology Expert analysis
Atmospheric State
Air Density (ρ)1.209 kg/m³
Sat. Vapor Press. (es)23.7 hPa
Act. Vapor Press. (ea)18.2 hPa
Mixing Ratio (ω)11.26 g/kg
Dew Point Depression20.2 °C
Pressure Tendency→ Steady
Cloud Layers
High0%
Medium0%
Low0%
Fog0%
Total OVC51%
Stability & Wind
Atm. Stability➡️ Neutral
LCL AnalysisLCL 2525m – stable boundary layer
Beaufort ScaleF5 – Fresh breeze
Land EffectsSmall trees sway, crested wavelets
Sea StateModerate waves, some spray
Precip & Fire
Rain 1h0.0 mm
Rain 6h0.1 mm
POP 1h / 6h— / —
Thunder Prob.0%
Fire Danger (FDI)32 Moderate
FDI GuidanceCaution – controlled burns only
Astronomy & Solar Sun & Moon data
07:06 SAST
Sunrise
17:22 SAST
Sunset
10h 17m
Day Length
Solar noon: 12:14 SAST
Declination: 19.78°
Declination: 19.78°
Waxing Crescent
Moon Phase
Illumination: 12.6%
Age: 3.4 days
Age: 3.4 days
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