Cities / French Guiana / Guyane

37°

⛅ Grand Lac weather

Partly cloudy. Light rain starting around 5:15pm.

Feels like 43° Wind 0 km/h S Humidity 34% UV 0 Air Good ☀ 06:30 - 18:45

Right now it is 37° in Grand Lac with partly cloudy skies, it feels more like 43°, today's high is 37° with an overnight low of 23° and about 2.3 mm of rain is expected. The sun rises at 06:30 and sets at 18:45, giving 12h 15m of daylight. Over the coming week highs range from 38° to 38° - a steady stretch with little day-to-day change.

Grand Lac is in Guyane, French Guiana, sitting 63 m above sea level. Local time is America/Cayenne (UTC−3), and every time on this page is shown in it.

Next 24 hours - temperature

22° 30° 37° 37° 22° 14:00 · 36.4° · 0 mm 15:00 · 37° · 0 mm 16:00 · 35° · 0 mm 17:00 · 31.7° · 0 mm 18:00 · 26° · 0.3 mm 19:00 · 24.5° · 0.5 mm 20:00 · 23.5° · 1 mm 21:00 · 23.4° · 0.2 mm 22:00 · 22.9° · 0.3 mm 23:00 · 22.8° · 0 mm 00:00 · 22.7° · 0 mm 01:00 · 22.7° · 0 mm 02:00 · 22.5° · 0 mm 03:00 · 22.3° · 0 mm 04:00 · 22.3° · 0 mm 05:00 · 22.5° · 0 mm 06:00 · 22.3° · 0 mm 07:00 · 22.7° · 0 mm 08:00 · 23.7° · 0 mm 09:00 · 25.8° · 0 mm 10:00 · 29.9° · 0 mm 11:00 · 31.1° · 0 mm 12:00 · 32.9° · 0 mm 13:00 · 36.9° · 0 mm

Precipitation

14:00 · 0 mm 14:00 15:00 · 0 mm 16:00 · 0 mm 17:00 · 0 mm 17:00 18:00 · 0.3 mm 19:00 · 0.5 mm 20:00 · 1 mm 20:00 21:00 · 0.2 mm 22:00 · 0.3 mm 23:00 · 0 mm 23:00 00:00 · 0 mm 01:00 · 0 mm 02:00 · 0 mm 02:00 03:00 · 0 mm 04:00 · 0 mm 05:00 · 0 mm 05:00 06:00 · 0 mm 07:00 · 0 mm 08:00 · 0 mm 08:00 09:00 · 0 mm 10:00 · 0 mm 11:00 · 0 mm 11:00 12:00 · 0 mm 13:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
14:00 ⛅ 36.4° 39.4° - Partly cloudy
15:00 ⛅ 37° 38.5° - Partly cloudy
16:00 ☁️ 35° 37.1° - Overcast
17:00 ☁️ 31.7° 32.4° - Overcast
18:00 🌦️ 26° 29.2° 0.3 mm Light rain
19:00 🌦️ 24.5° 28.7° 0.5 mm Light rain
20:00 🌧️ 23.5° 27.6° 1 mm Rain
21:00 🌦️ 23.4° 27.2° 0.2 mm Light rain
22:00 🌦️ 22.9° 27.1° 0.3 mm Light rain
23:00 🌤️ 22.8° 27.4° - Mostly clear
00:00 ⛅ 22.7° 27.3° - Partly cloudy
01:00 ⛅ 22.7° 27.3° - Partly cloudy

Next 16 days

Today🌧️ 37°23°2.3mm Sat 22☁️ 38°22° Sun 23☀️ 38°23° Mon 24🌧️ 38°23°1.4mm Tue 25🌧️ 38°22°1.6mm Wed 26🌦️ 38°22°1.3mm Thu 27🌤️ 38°22° Fri 28🌤️ 36°22°0.3mm Sat 29⛅ 37°23°0.3mm Sun 30☀️ 38°23° Mon 31☁️ 39°22°0.3mm Tue 1☀️ 38°21° Wed 2☀️ 38°21° Thu 3☀️ 38°20° Fri 4🌤️ 39°21° Sat 5⛅ 39°21°
🌧️ TodayAugust 21st Avg 26° Low 23° at 23:00 High 37° at 15:00 2.3 mm rain Feels 39° Wind ~13 km/h
Cloudy Rain
00:00 24°
02:00 23°
04:00 23°
06:00 24°
08:00 24°
10:00 26°
12:00 27°
14:00 36°
16:00 35°
18:00 26° 0.3mm
20:00 24° 1mm
22:00 23° 0.3mm
☁️ SaturdayAugust 22nd Avg 28° Low 22° at 03:00 High 38° at 15:00 Wind ~12 km/h
Cloudy Partly Cloudy Cloudy
00:00 23°
02:00 23°
04:00 22°
06:00 22°
08:00 24°
10:00 30°
12:00 33°
14:00 38°
16:00 38°
18:00 31°
20:00 28°
22:00 26°
☀️ SundayAugust 23rd Avg 29° Low 23° at 07:00 High 38° at 15:00 Wind ~13 km/h
Cloudy Clear Cloudy
00:00 25°
02:00 24°
04:00 25°
06:00 23°
08:00 26°
10:00 31°
12:00 35°
14:00 38°
16:00 38°
18:00 33°
20:00 28°
22:00 26°
🌧️ MondayAugust 24th Avg 28° Low 23° at 06:00 High 38° at 14:00 1.4 mm rain Wind ~11 km/h
Partly Cloudy Clear Cloudy
00:00 25°
02:00 24°
04:00 23°
06:00 23°
08:00 26°
10:00 31°
12:00 35°
14:00 38°
16:00 32°
18:00 29°
20:00 23° 1mm
22:00 24°
🌧️ TuesdayAugust 25th Avg 28° Low 22° at 06:00 High 38° at 15:00 1.6 mm rain Wind ~12 km/h
Clear Clear Cloudy
00:00 22°
02:00 22°
04:00 22°
06:00 22°
08:00 24°
10:00 31°
12:00 35°
14:00 38°
16:00 37°
18:00 30°
20:00 24° 0.5mm
22:00 24°
🌦️ WednesdayAugust 26th Avg 28° Low 22° at 05:00 High 38° at 15:00 1.3 mm rain Wind ~9 km/h
Clear Rain
00:00 23° 0.3mm
02:00 23°
04:00 22°
06:00 22°
08:00 25°
10:00 29°
12:00 35°
14:00 38°
16:00 36°
18:00 31°
20:00 25° 0.2mm
22:00 23°
🌤️ ThursdayAugust 27th Avg 28° Low 22° at 05:00 High 38° at 14:00 Wind ~12 km/h
Clear Partly Cloudy Clear Cloudy
00:00 23°
02:00 23°
04:00 22°
06:00 22°
08:00 26°
10:00 31°
12:00 35°
14:00 38°
16:00 36°
18:00 30°
20:00 28°
22:00 26°
🌤️ FridayAugust 28th Avg 28° Low 22° at 05:00 High 36° at 12:00 0.3 mm rain Feels 38° Wind ~12 km/h
Clear Partly Cloudy Clear Partly Cloudy Rain
00:00 25°
02:00 23°
04:00 23°
06:00 23°
08:00 27°
10:00 32°
12:00 36°
14:00 33°
16:00 31°
18:00 32°
20:00 27° 0.1mm
22:00 24°
⛅ SaturdayAugust 29th Avg 28° Low 23° at 03:00 High 37° at 15:00 0.3 mm rain Wind ~10 km/h
Partly Cloudy Cloudy Partly Cloudy Partly Cloudy Rain
00:00 24°
02:00 23°
04:00 23°
06:00 24°
08:00 26°
10:00 30°
12:00 34°
14:00 37°
16:00 36°
18:00 32°
20:00 27° 0.1mm
22:00 25°
☀️ SundayAugust 30th Avg 29° Low 23° at 05:00 High 38° at 15:00 Wind ~14 km/h
Clear Cloudy Clear Partly Cloudy Clear
00:00 26°
02:00 25°
04:00 24°
06:00 24°
08:00 26°
10:00 31°
12:00 35°
14:00 38°
16:00 37°
18:00 34°
20:00 29°
22:00 26°
☁️ MondayAugust 31st Avg 29° Low 22° at 05:00 High 39° at 15:00 0.3 mm rain Wind ~15 km/h
Cloudy Clear Rain
00:00 25°
02:00 24°
04:00 23°
06:00 22°
08:00 26°
10:00 31°
12:00 36°
14:00 39°
16:00 38°
18:00 34°
20:00 28° 0.1mm
22:00 24°
☀️ TuesdaySeptember 1st Avg 29° Low 21° at 05:00 High 38° at 15:00 Wind ~11 km/h
Clear
00:00 24°
02:00 23°
04:00 21°
06:00 21°
08:00 25°
10:00 31°
12:00 35°
14:00 38°
16:00 38°
18:00 34°
20:00 29°
22:00 25°
☀️ WednesdaySeptember 2nd Avg 29° Low 21° at 05:00 High 38° at 15:00 Wind ~11 km/h
Clear
00:00 24°
02:00 23°
04:00 22°
06:00 21°
08:00 25°
10:00 30°
12:00 35°
14:00 38°
16:00 38°
18:00 35°
20:00 28°
22:00 25°
☀️ ThursdaySeptember 3rd Avg 28° Low 20° at 05:00 High 38° at 15:00 Wind ~10 km/h
Clear Partly Cloudy Clear
00:00 24°
02:00 22°
04:00 20°
06:00 20°
08:00 25°
10:00 30°
12:00 34°
14:00 38°
16:00 37°
18:00 32°
20:00 28°
22:00 25°
🌤️ FridaySeptember 4th Avg 29° Low 21° at 05:00 High 39° at 15:00 Wind ~9 km/h
Clear Partly Cloudy
00:00 23°
02:00 22°
04:00 21°
06:00 21°
08:00 25°
10:00 31°
12:00 36°
14:00 39°
16:00 38°
18:00 34°
20:00 29°
22:00 25°
⛅ SaturdaySeptember 5th Avg 29° Low 21° at 05:00 High 39° at 15:00 Wind ~10 km/h
Clear Partly Cloudy Clear
00:00 23°
02:00 22°
04:00 21°
06:00 21°
08:00 25°
10:00 31°
12:00 36°
14:00 38°
16:00 38°
18:00 34°
20:00 29°
22:00 25°

Sun

☀️ Sunrise 06:30 · Sunset 18:45

12h 15m of daylight · America/Cayenne

Air quality

PM2.5 7.5 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Fracas · 7 km Délices · 11.2 km Divalon · 21.1 km Toussine · 21.6 km John · 22 km Bernard · 23.6 km

Tools for Grand Lac

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Grand Lac weather

Will it rain in Grand Lac today?

Yes - about 2.3 mm of rain is expected in Grand Lac today.

What is the temperature in Grand Lac right now?

It is 37° in Grand Lac right now, though it feels closer to 43°. Today runs between a low of 23° and a high of 37°.

What time is sunrise and sunset in Grand Lac?

The sun rises at 06:30 and sets at 18:45 local time in Grand Lac today, giving 12h 15m of daylight.

What is the air quality in Grand Lac?

PM2.5 in Grand Lac is currently 7.5 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.

How accurate is the Grand Lac forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Grand Lac best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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