Summit today
Is it safe to climb Slemish today?
Slemish today (updated 05:18, 18 Oct): up to 9°C at the summit, feeling as cold as -4°C, summit wind 10 mph gusting 15 mph, 0% chance of rain. A good day for the hills.
Slemish weather today
Partly cloudy, up to 9°C at the summit, feeling as cold as -4°C, summit wind 10 mph gusting 15 mph, 0% chance of rain. Rated Good.
Slemish weather tomorrow
Monday 19 October: light drizzle, up to 9°C at the summit, feeling as cold as 0°C, summit wind 16 mph gusting 20 mph, 36% chance of rain. Rated Good.
Slemish weather this weekend
Sunday 18 October: partly cloudy, up to 9°C at the summit, feeling as cold as -4°C, summit wind 10 mph gusting 15 mph, 0% chance of rain. Rated Good.
Slemish summit forecast, next 7 days
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| TodayPartly cloudy | Good | 9°/-1° | -4° | 10/15 | 0% |
|---|
| TomorrowLight drizzle | Good | 9°/3° | 0° | 16/20 | 36% |
|---|
| Tue 20Moderate drizzle | Marginal | 10°/6° | 2° | 31/39 | 51% |
|---|
| Wed 21Moderate drizzle | Marginal | 7°/3° | -1° | 33/41 | 65% |
|---|
| Thu 22Light drizzle | Marginal | 7°/3° | -1° | 20/25 | 67% |
|---|
| Fri 23Overcast | Marginal | 6°/2° | -3° | 24/30 | 80% |
|---|
| Sat 24Moderate rain | Poor | 8°/1° | -3° | 49/61 | 49% |
|---|
Slemish 14-day weather forecast: days 8 to 14, less certain
| Day | Verdict | High/low | Feels like | Wind/gust mph | Rain or snow |
|---|
| Sun 25Moderate drizzle | Poor | 12°/1° | -2° | 40/50 | 67% |
|---|
| Mon 26Dense drizzle | Poor | 13°/6° | 3° | 40/50 | 37% |
|---|
| Tue 27Light drizzle | Marginal | 7°/3° | -2° | 38/47 | 47% |
|---|
| Wed 28Overcast | Good | 9°/3° | -2° | 23/28 | 42% |
|---|
| Thu 29Light drizzle | Marginal | 9°/5° | 2° | 29/37 | 37% |
|---|
| Fri 30Moderate drizzle | Marginal | 9°/2° | 1° | 27/34 | 33% |
|---|
| Sat 31Light drizzle | Marginal | 10°/1° | 0° | 34/42 | 34% |
|---|
Routes up
Routes coming soon
Cloud inversion · 7 days
The chance of standing above a sea of cloud on Slemish each morning this week, from overnight temperature, humidity and low cloud below the 438m summit.
Dark sky · 7 days
How dark the sky gets over Slemish each night this week, from cloud cover, moonlight and local light pollution.
Snow · 7 days
No snow is forecast at the summit in the next 7 days.
Sun today
Sunrise 07:59, sunset 18:19
10h 19m of daylight. Golden hour ends 08:50 and starts 17:27. From the summit you see the sun 07:55 to 18:23.
Nearby summits
Close to Slemish
About Slemish
Slemish is 438 m (1,437 ft) high with 151 m of prominence. It is in Antrim Mountains, Ireland. OS grid reference D221053. It is the 7th highest of the 15 summits Peakify lists in Antrim Mountains. The nearest summits are Big Collin (8.8 km), Carnearny (13 km) and Slievenanee (17 km).
How high is Slemish?
Slemish is 438 metres high with 151 metres of prominence.
Where is Slemish?
Slemish is listed in Antrim Mountains, Ireland.
Are there routes for Slemish?
Route data is not available for this mountain yet, but the page still shows summit, weather, and location context.
Is it safe to climb Slemish today?
Peakify rates each day on the summit Good, Marginal or Poor from the forecast summit wind, gusts, chance of rain and wind chill. Wind of 40 mph or gusts of 65 mph make it Poor; wind of 25 mph, gusts of 45 mph, a 60% chance of rain or a feels-like temperature of -8°C or below make it Marginal. Today's and tomorrow's ratings are at the top of this page. The rating covers the weather only: also check your route, daylight, kit and experience, and in winter whether you need an ice axe and crampons.
What is the weather on Slemish tomorrow?
Monday 19 October: light drizzle, up to 9°C at the summit, feeling as cold as 0°C, summit wind 16 mph gusting 20 mph, 36% chance of rain. Rated Good.
What is the weather on Slemish this weekend?
Sunday 18 October: partly cloudy, up to 9°C at the summit, feeling as cold as -4°C, summit wind 10 mph gusting 15 mph, 0% chance of rain. Rated Good.
What weather information is shown for Slemish?
The page includes cached mountain forecast context, snow outlook, dark-sky signals, cloud-inversion information, sunrise, sunset, and summit planning details where available.
Written and kept up to date by the Peakify team. The forecast refreshes every hour; how our forecast works.
