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Weather in Sligo - 14-day forecast

Detailed weather forecast for Sligo, Ireland: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Sligo
today🌧️ 17°💧 0.3 mm
Sun🌧️ 19°💧 2 mm
Mon🌧️ 15°💧 2.9 mm
Tue🌧️ 12°💧 5 mm
Wed🌧️ 14°💧 2.9 mm
Thu🌧️ 18°💧 3.4 mm
Fri🌧️ 15°💧 1.1 mm
Sat🌧️ 12°💧 0.7 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Tuesday 8 Sept in Sligo, the forecast high is 12°C. Typical daytime temperatures at this time of year range from 14°C to 17°C, so it will be exceptionally cool. It is cooler than 97% of similar days.

17°Cwarmer than usual
usually 14°C–17°C
warmer than 75% of similar days
night: exceptionally warm rain: less rain than usual wind: lighter than usual
19°Cexceptionally warm
usually 14°C–17°C
warmer than 93% of similar days
night: warmer than usual rain: typical rainfall wind: typical
15°Ccooler than usual
usually 14°C–17°C
cooler than 71% of similar days
night: cooler than usual rain: typical rainfall wind: typical
12°Cexceptionally cool
usually 14°C–17°C
cooler than 97% of similar days
night: near normal rain: more rain than usual wind: typical
14°Ccooler than usual
usually 14°C–17°C
cooler than 73% of similar days
night: near normal rain: typical rainfall wind: lighter than usual
18°Cwarmer than usual
usually 14°C–17°C
warmer than 86% of similar days
night: near normal rain: typical rainfall wind: lighter than usual
15°Cnear normal
usually 14°C–17°C
night: cooler than usual rain: typical rainfall wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
10°18°25° 1981: 17°C1982: 15°C1983: 14°C1984: 15°C1985: 15°C1986: 13°C1987: 15°C1988: 16°C1989: 14°C1990: 15°C1991: 18°C1992: 14°C1993: 15°C1994: 14°C1995: 15°C1996: 16°C1997: 15°C1998: 16°C1999: 16°C2000: 17°C2001: 16°C2002: 15°C2003: 16°C2004: 18°C2005: 17°C2006: 18°C2007: 17°C2008: 15°C2009: 16°C2010: 16°C2011: 15°C2012: 16°C2013: 14°C2014: 16°C2015: 15°C2016: 17°C2017: 15°C2018: 15°C2019: 15°C2020: 15°C2021: 18°C2022: 18°C2023: 20°C2024: 16°C2025: 16°C 2026 forecast: 16°C current forecast 16°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 16°C by day. The coolest year was 1986 (13°C) and the warmest was 2023 (20°C). The current forecast averages 16°C - close to the historical median.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Sligo

No active weather warnings for Sligo (region: County Sligo). The national weather service is not forecasting dangerous conditions.

14-day forecast - Sligo

Sligo - 14-day weather forecast infographic

Sligo 30 & 45-day weather - long-range outlook

Next 16 days · forecast
16°
around 13° at night · days with rain: 11
Weeks 3-4 · avg for September
16°
around 12° at night · rain chance 26%
Weeks 5-7 · avg for October
13°
around 9° at night · rain chance 29%
The 30 & 45-day outlook for Sligo: the next 16 days are a numerical forecast updated daily - on average 16° by day and 13° at night. Further out we rely on multi-year climate averages: around 16° in September, and about 13° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Sligo

Saturday5 September 2026
🌧️17°light rain
sunrise 06:48 · sunset 20:16 · night 15° · evening 15° · rain 0.26 mm · humidity 64% · wind 6 m/s · clouds 85%
Sunday6 September 2026
🌧️19°light rain
sunrise 06:50 · sunset 20:14 · night 14° · evening 17° · rain 1.95 mm · humidity 86% · wind 10 m/s · clouds 100%
Monday7 September 2026
🌧️15°light rain
sunrise 06:52 · sunset 20:11 · night 12° · evening 13° · rain 2.9 mm · humidity 74% · wind 10 m/s · clouds 45%
Tuesday8 September 2026
🌧️12°light rain
sunrise 06:53 · sunset 20:09 · night 12° · evening 13° · rain 4.99 mm · humidity 87% · wind 10 m/s · clouds 92%
Wednesday9 September 2026
🌧️14°light rain
sunrise 06:55 · sunset 20:06 · night 12° · evening 13° · rain 2.9 mm · humidity 75% · wind 7 m/s · clouds 100%
Thursday10 September 2026
🌧️18°light rain
sunrise 06:57 · sunset 20:04 · night 13° · evening 16° · rain 3.39 mm · humidity 83% · wind 7 m/s · clouds 100%
Friday11 September 2026
🌧️15°light rain
sunrise 06:59 · sunset 20:01 · night 12° · evening 13° · rain 1.08 mm · humidity 71% · wind 8 m/s · clouds 100%
Saturday12 September 2026
🌧️12°light rain
sunrise 07:01 · sunset 19:59 · night 13° · evening 14° · rain 0.69 mm · humidity 90% · wind 2 m/s · clouds 100%
Sunday13 September 2026
☀️17°clear sky
sunrise 07:02 · sunset 19:56 · night 12° · evening 15° · rain 6.3 mm · humidity 65% · wind 3 m/s · clouds 26%
Monday14 September 2026
🌧️17°light rain
sunrise 07:04 · sunset 19:54 · night 12° · evening 15° · rain 0.12 mm · humidity 72% · wind 5 m/s · clouds 56%
Tuesday15 September 2026
🌧️17°light rain
sunrise 07:06 · sunset 19:51 · night 13° · evening 15° · rain 0.12 mm · humidity 69% · wind 5 m/s · clouds 100%
Wednesday16 September 2026
🌧️16°light rain
sunrise 07:08 · sunset 19:49 · night 10° · evening 13° · rain 6.39 mm · humidity 77% · wind 8 m/s · clouds 68%
Thursday17 September 2026
🌧️16°moderate rain
sunrise 07:10 · sunset 19:46 · night 12° · evening 12° · rain 12.48 mm · humidity 76% · wind 7 m/s · clouds 100%
Friday18 September 2026
🌧️17°moderate rain
sunrise 07:11 · sunset 19:44 · night 13° · evening 14° · rain 5.73 mm · humidity 80% · wind 11 m/s · clouds 100%
Saturday19 September 2026
🌧️16°light rain
sunrise 07:13 · sunset 19:41 · night 12° · evening 14° · rain 1.74 mm · humidity 71% · wind 6 m/s · clouds 66%
Sunday20 September 2026
☀️16°clear sky
sunrise 07:15 · sunset 19:39 · night 14° · evening 14° · humidity 69% · wind 3 m/s

UV index in Sligo - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTSligo03681111+2.4UV LOWtoday, daily maxYou can safely stay outside. Sunscreen only mattersfor very long exposure.2Sat5.092Sun6.095Mon7.094Tue8.094Wed9.093Thu10.094Fri11.092Sat12.094Sun13.093Mon14.091Tue15.092Wed16.093Thu17.092Fri18.093Sat19.094Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Sligo is 2 (low). You can safely stay outside. Sunscreen only matters for very long exposure.

Sea temperature - Sligo

Water today
17°C
Week avg
17°C
Waves today
1.4 m
How's the water?
cold
16-day sea temperature forecast:
5.09 17°C6.09 17°C7.09 17°C8.09 17°C9.09 17°C10.09 16°C11.09 16°C12.09 16°C13.09 16°C
Average sea temperature through the year:
Jan 7°CFeb 8°CMar 8°CApr 10°CMay 14°CJun 16°CJul 17°CAug 17°CSep 16°COct 13°CNov 11°CDec 9°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Sligo weather through the year

Sligo - annual climate

Warmest, driest months on average: April, May, June, July.

Upcoming public holidays in Ireland: October Holiday — 26 October · Christmas Day — 25 December · St. Stephen's Day — 26 December.

Nearby and related places

AthloneGalwaySwordsLimerickWaterfordKilkenny

FAQ - Sligo weather

What is the weather like in Sligo today?
Today it is about 17° during the day and 15° at night, light rain.
How far ahead can I check the forecast for Sligo?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.