11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
9°
Feels like 5°
Wind↑ ENE 31 km/h
Gusts50 km/h
Humidity 73 %
Afternoon
Mainly clear
10°
Feels like 10°
Wind↑ ENE 34 km/h
Gusts42 km/h
Humidity 64 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
6°
Feels like 1°
Wind↑ ENE 31 km/h
Gusts51 km/h
Humidity 68 %
Afternoon
Rain
6°
Feels like 3°
Wind↑ E 24 km/h
Gusts31 km/h
Humidity 94 %
💧 5.2 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Rain showers
13°
Feels like 13°
Wind↑ SE 30 km/h
Gusts56 km/h
Humidity 92 %
💧 0.8 mm
Afternoon
Light rain
14°
Feels like 14°
Wind↑ W 48 km/h
Gusts58 km/h
Humidity 92 %
💧 2.4 mm
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Light rain
11°
Feels like 11°
Wind↑ SW 30 km/h
Gusts38 km/h
Humidity 82 %
💧 4.5 mm
Afternoon
Rain showers
11°
Feels like 11°
Wind↑ W 28 km/h
Gusts34 km/h
Humidity 66 %
💧 0.7 mm
Saint-Nazaire forecast in charts · next 7 days
The week ahead: highs and lows
▼ This week runs -1.9° cooler than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Saint-Nazaire climate: what a normal year looks like
From 15 h 56 min of daylight in late June to 8 h 28 min in late December.
Swimmers find the warmest sea in August (19 °C) and the coolest in February (9 °C).
The hottest stretch is August, when afternoons average 22 °C; the coldest is January, when nights average 5 °C.
There is no real dry season: monthly rainfall stays between 47 mm and 86 mm on average.
Forecast highs for the coming week average 13 °C, 3 °C cooler than a normal October (16 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Sea
Jan
9 °C
5 °C
78 mm
10 °C
Feb
10 °C
5 °C
60 mm
9 °C
Mar
12 °C
6 °C
56 mm
10 °C
Apr
14 °C
9 °C
58 mm
12 °C
May
18 °C
12 °C
60 mm
14 °C
Jun
20 °C
14 °C
47 mm
17 °C
Jul
22 °C
16 °C
47 mm
18 °C
Aug
22 °C
16 °C
51 mm
19 °C
Sep
20 °C
14 °C
56 mm
18 °C
Oct
16 °C
11 °C
81 mm
16 °C
Nov
12 °C
8 °C
81 mm
14 °C
Dec
9 °C
5 °C
86 mm
11 °C
Whole year
15 °C
10 °C
760 mm
14 °C
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 47.28° N, 2.24° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Saint-Nazaire: pollution and pollen
2/6
Fair
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.511µg/m³
PM1020µg/m³
O₃51µg/m³
NO₂9µg/m³
SO₂1µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Saint-Nazaire
Rain observed over the last two hours by official weather radars around Saint-Nazaire, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
Moon over Saint-Nazaire
Waning gibbous
87 % illuminated · 18.3 days
Rise 05:38 Set 23:16
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/Paris); phase and lit fraction from a synodic calculation.
Sea and tides near Saint-Nazaire
Tide station used: Saint Nazaire · 3 km away
🌊 Sea surface
14.6 °C
satellite, 29/10
Sea state
Smooth
waves 0.8 m
Period
11 s
Swell
0.8 m
TodayThu 29/10
High range92
High tide06:056.0 m
Low tide12:551.2 m
High tide18:245.7 m
TomorrowFri 30/10
High range82
Low tide01:201.5 m
High tide06:435.7 m
Low tide13:481.5 m
High tide19:075.4 m
SatSat 31/10
High range70
Low tide02:131.8 m
High tide07:305.4 m
Low tide14:461.7 m
High tide20:034.9 m
SunSun 01/11
Mean tide58
Low tide03:122.1 m
High tide08:455.0 m
Low tide15:482.0 m
High tide22:274.6 m
Indicative heights above chart datum. Coefficient: 20 for the weakest tides, 120 for the strongest.
Look up a past day in Saint-Nazaire
Curious about the weather in Saint-Nazaire on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Saint-Nazaire weather at a glance
This page gathers everything about the weather in Saint-Nazaire, Loire-Atlantique (44): conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “mainly clear”, it is 12 °C (feels like 12 °C) and the wind blows at 11 km/h.
Expected range today: 11 °C to 14 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms, plus the tide times for Saint Nazaire.
Use the Saint-Nazaire forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
