Camping Sonnenberg
Tonight: low 0 °C, frost likely.
Nights by month
Night lows from 2016 to 2025: a typical night, and the cold one that comes 1 night in 10.
The mildest nights are in August, typically 14°C. The coldest are in January, when 1 night in 10 drops to -5°C. Frost is common in January, February, March, April, November and December.
- Jan-1°C -5°CBag comfortable to -4°C · frost 56% · rain or snow 49% of days
- Feb1°C -4°CBag comfortable to -3°C · frost 42% · rain or snow 48% of days
- Mar2°C -3°CBag comfortable to -1°C · frost 26% · rain or snow 44% of days
- Apr4°C -1°CBag comfortable to 0°C · frost 13% · rain or snow 38% of days
- May8°C 4°CBag comfortable to 5°C · frost 1% · rain or snow 41% of days
- Jun13°C 9°CBag comfortable to 10°C · frost 0% · rain or snow 41% of days
- Jul14°C 11°CBag comfortable to 12°C · frost 0% · rain or snow 38% of days
- Aug14°C 11°CBag comfortable to 12°C · frost 0% · rain or snow 40% of days
- Sep11°C 7°CBag comfortable to 8°C · frost 0% · rain or snow 35% of days
- Oct8°C 4°CBag comfortable to 5°C · frost 0% · rain or snow 43% of days
- Nov (this month)4°C -1°CBag comfortable to 0°C · frost 17% · rain or snow 49% of days
- Dec1°C -3°CBag comfortable to -2°C · frost 39% · rain or snow 49% of days
| = 0°C
History: ERA5 and ERA5-Land reanalysis via Open-Meteo, corrected to the site's elevation. Bag rating: the comfort rating that keeps you warm in a tent on 9 of 10 nights that month.
Tonight
Worth a lookMonday, November 9, 22:00 to 07:00
Your setup looks too cold for this night
Expected from around 02:00.
Your sleeping bag is not warm enough for this night.
Best change
Sleep in a warm layer, a hat and dry socks, and take a hot water bottle.
This is based on typical values for the gear types you picked, so treat it as an estimate.
Your night
- 22:00 to 02:00ComfortableAir around you 8 to 7°C, some dew.
- 02:00 to 06:00Chilly. Add a layerAir around you 6 to 2°C, some dew from 03:00.
- 06:00 until morningCold. Your setup is not warm enoughAir around you 1°C, frost from 07:00.
Every hour
- 22:008°Ccomfortable, some dew
- 23:007°Ccomfortable
- 00:007°Ccomfortable
- 01:007°Ccomfortable, some dew
- 02:006°Cchilly
- 03:005°Cchilly, some dew
- 04:003°Cchilly, some dew
- 05:002°Cchilly, some dew
- 06:001°Ccold, some dew
- 07:001°Ccold, frost
Times are local time at your spot (GMT+1).
What works tonight
The gear this night calls for, for someone who sleeps like you.
- Missing
Sleeping bag
Comfort 0°C or colder
The comfort rating on the label, not the limit, which is about 5 °C lower.
- Missing
Underneath you
R2.5 or more
The R-value says how well a pad keeps the cold ground out.
- Worth adding
Also useful
A bag liner
Adds a few degrees to the bag you already own.
Before you sleep
- Put on a warm layer and a hat before about 02:00, or go to bed already wearing them.
- Eat a proper meal with some fat before bed. Your body keeps burning it through the night.
- Pee right before you get in your bag. Getting out at 03:00 in the cold is worse.
- Sleep in dry clothes, not the ones you wore all day. Damp fabric pulls heat out of you.
- Fill a sturdy water bottle with hot (not boiling) water, check the lid does not leak, and put it in your bag by your core or feet.
- Bring shoes, clothes and electronics inside. Anything left out will be wet by morning.
- Open the tent vents and keep the door zip open a bit at the top. Some condensation inside is normal on a night like this, so bring a small towel to wipe it off.
How we estimated this
At the coldest hour (07:00):
- Outside at your spot
- 0°C
- Warmth your shelter holds
- +1 °C
- Clear-sky cooling
- −1 °C
- Air around you
- 0°C
- Your bag's comfort rating
- 4°C
- Cold ground through what you lie on
- +2 °C
- Your comfort limit
- 6°C
6 °C short, so you will likely be cold.
Assumptions
- Bag categories use typical ratings as sold: summer about 50 °F (10 °C), 3-season about 30 °F (-1 °C), winter about 15 °F (-9 °C). The number in a bag's name is usually its lower limit, so its comfort rating is about 9 °F (5 °C) warmer.
- What you lie on: foam mat about R2, thin air pad about R1.5, insulated pad about R3.5, winter pad R5 and up, van bed about R4, air mattress about R0.5. Colder ground needs a higher R-value.
- Shelters hold a few degrees early in the night and less towards morning. Wind and clear, calm skies take warmth away.
- Weather: Open-Meteo forecast for your spot, on a grid of a few kilometers, corrected to its height.
- These are rules of thumb, not measurements. People and gear vary.
A forecast, not a promise. Mountains, valleys and water make their own weather, so trust what you see and feel on site. Terms and liability
Checked for a double-wall tent, a 3-season bag and a thin air pad. Check your own gear here.