Rennes-Saint-Jacques Airport

LFRN / RNS

Saint-Jacques-de-la-Lande, Ille-et-Vilaine, FR

Last Updated
May 15, 00:00Z

Current Weather

Display Units
Fresh 12 min ago
00:00Z

🌙 Night
VFR
Flight Rules
7°C
Temperature
Dewpoint: 6°C
5 kt
310°
10+ km
Visibility
4,000 ft
Ceiling
Above Ground Level
1004 hPa
QNH
Altimeter Setting

Raw METAR

METAR LFRN 150000Z AUTO 31005KT 9999 -RA FEW042/// BKN058/// OVC070/// ///TCU 07/06 Q1004 TEMPO 3000 BR BECMG BKN040

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 124 ft
BKN 4,000 ft AGL
FEW 4,200 ft AGL
BKN 5,800 ft AGL
OVC 7,000 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
4,000 ft
AGL (Above Ground)
4,124 ft AMSL
🌤️
FEW
Few (1/8-2/8 sky coverage)
4,200 ft
AGL (Above Ground)
4,324 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
5,800 ft
AGL (Above Ground)
5,924 ft AMSL
☁️
OVC
Overcast (8/8 sky coverage)
7,000 ft
AGL (Above Ground)
7,124 ft AMSL

Weather Briefing

VFR

Rennes-Saint-Jacques Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 7,000 feet and 10 miles or greater visibility.

Wind Analysis

Winds are from the northwest (310°) at 5 knots. Runway 32 is favored with a 5-knot headwind and 1-knot crosswind component.

Visibility & Ceiling

Visibility is unrestricted. The ceiling is 4000 feet AGL (broken), well above standard VFR minimums.

Temperature & Moisture

Temperature is 7°C (45°F) with a dewpoint of 6°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 24 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Mist, Fog, Showers Rain. There is a 40% probability of IFR conditions with Mist between 01:00Z and 06:00Z. There is a 30% probability of LIFR conditions with Fog between 03:00Z and 06:00Z. Temporary IFR conditions are forecast with Showers Rain between 08:00Z and 13:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1004 hPa
Sea Level Pressure
For altitude above MSL
QFE
1000 hPa
Field Pressure
Height above aerodrome (124 ft)
Pressure Alt
402 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -528 ft
ISA Deviation: -7.8°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF LFRN 142300Z 1500/1524 VRB05KT 9999 BKN040 PROB40 TEMPO 1501/1506 3000 BR PROB30 TEMPO 1503/1506 0500 FG TEMPO 1508/1513 4000 SHRA BKN025TCU SCT030CB BECMG 1510/1512 35010KT PROB40 TEMPO 1510/1515 34015G25KT BECMG 1519/1522 VRB05KT
Upcoming Changes (Next 12 Hours)
00:11Z BASE
+0h
VFR VRB 5 kt
Visibility: 10+ km
Ceiling: 4,000 ft
01:00Z PROB40 TEMPO
+1h
IFR
Visibility: 3 km
Mist
03:00Z PROB30 TEMPO
+3h
LIFR
Visibility: 0.5 km
Fog
08:00Z TEMPO
+8h
IFR
Visibility: 4 km
Ceiling: 2,500 ft
Showers Rain

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
FRN
10
28 ✈️
14
32 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 10/28
Active: 28
6,890 ft 148 ft ASP 101°
4.3 kt 2.5 kt
30° angle
✈️ 14/32
Active: 32
2,788 ft 98 ft ASP 142°
4.9 kt 0.9 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - LFRN

11,439 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
38.2%
MVFR
21.8%
IFR
26.1%
LIFR
13.9%

Rennes-Saint-Jacques Airport is frequently affected by reduced visibility conditions, with VFR weather only 38.2% of the time and IFR/LIFR conditions occurring in 40% of observations. Prevailing winds are from the S averaging 7.8 knots. Temperature extremes range from -6°C to 29°C, reflecting significant seasonal variation. Fog is a notable factor, occurring in approximately 13.8% of observations, with visibility below 3 SM in 0% of reports. The best months for VFR flying are April, September, October.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 7.8 kt
Maximum Recorded: 26 kt
Calm Winds: 1.9%
Direction Distribution:
N
11%
NE
5.5%
E
10.3%
SE
12.2%
S
22.2%
SW
18.2%
W
12.1%
NW
6.6%

Temperature Range

Average: 10.7°C
Range: -6°C to 29°C
-6°C 29°C

Visibility

Average: 10 SM
Below 3 SM: 0%
Fog Frequency: 13.8%

Best Months for VFR

April September October

Runway Wind Analysis

Runway 10/28
Favorable wind: 100%
Avg crosswind: 5.4 kt
Runway 14/32
Favorable wind: 100%
Avg crosswind: 5 kt

Statistics computed from 11,439 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.

Rennes-Saint-Jacques Airport - Airport Information

Airport Details

ICAO Code: LFRN
IATA Code: RNS
Type: medium airport
Status: active
Elevation: 124 ft MSL

Location

City: Saint-Jacques-de-la-Lande, Ille-et-Vilaine
Country: FR
Latitude: 48.069500°
Longitude: -1.734790°
Time Zone: Europe/Brussels

Runway Information

Runway 10/28
Length: 6,890 ft
Width: 148 ft
Surface: ASP
ILS: No
Runway 14/32
Length: 2,788 ft
Width: 98 ft
Surface: ASP
ILS: No

About Rennes-Saint-Jacques Airport

Overview

Rennes-Saint-Jacques Airport serves the Brittany region in northwestern France, located near the city of Rennes in Ille-et-Vilaine. As a medium-sized airport with an elevation of 124 feet MSL, it provides critical aviation infrastructure for regional and commercial operations. The airport features two asphalted runways capable of supporting diverse aircraft types.

Flying Conditions

Weather conditions at Rennes-Saint-Jacques demonstrate significant variability, with visual flight rules (VFR) conditions present 36.7% of the time and instrument conditions (IFR/LIFR) occurring 41.4% of observations. Temperature ranges from -6°C to 29°C, with an average of 10.3°C, indicating potential seasonal temperature challenges. Prevailing winds from the south (180°) average 7.8 knots, with occasional gusts up to 26 knots.

Notable Features

The airport's two runways offer flexibility for different wind conditions, with both 10/28 and 14/32 experiencing 100% favorable wind alignments. Crosswind components remain relatively moderate, averaging 5-5.6 knots across runways. The airport's location in Brittany suggests potential maritime weather influences and complex local terrain interactions.

Approach Considerations

Pilots should anticipate mixed meteorological conditions, with fog occurring in 13.4% of observations and average visibility around 10 statute miles. September through November represent the most consistently favorable VFR months. The longer runway 10/28 at 6,890 feet provides substantial landing and takeoff options for most aircraft types.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.