Howth Weather in September
Howth in September
The short of it: Howth in September averages a high of 17 °C (63 °F) and a low of 10 °C (50 °F), with 74 mm (2.9 in) of rain and about 12 h 35 min of daylight. Rated 3 of 5 for a visit; the best months are June and July. Source: TerraClimate climate normals, 1991–2020.
Average high 17° · low 10° · rain 74 mm · daylight 12 h 35 min
✦✦✦ Fair for a visit · best months: June & July
Thirty years of records give Howth an average September high of 17°, a low of 10° and some 74 mm of rain. Much like August: highs about 17°, nights near 10°. A wool coat will serve you well. Wet spells are common — about 74 mm, the 6th wettest month.
The sun is up for about 12 h 35 min in mid-September, 131 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates September 3 of 5 for a visit; the finest months here are June and July.
Against its neighbours, Howth runs cooler than most and wetter than most in September. Portmarnock, 6 km to the NW, is 1° warmer by day.
September in Howth, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 6th wettest of 12
- Versus August
- 2° colder, 12 mm less rain
- Versus October
- 3° warmer
- Day–night spread
- 7°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 35 min
- Average wind
- 18 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| PortmarnockLeinster | 6 km NW | 18° | 10° | 71 mm |
| DonaghmedeLeinster | 7 km W | 18° | 10° | 69 mm |
| MalahideLeinster | 9 km NW | 18° | 10° | 71 mm |
| BeaumontLeinster | 11 km W | 18° | 10° | 66 mm |
| Dún LaoghaireLeinster | 11 km SSW | 18° | 10° | 66 mm |
| MarinoLeinster | 12 km W | 18° | 10° | 64 mm |
| RingsendLeinster | 12 km WSW | 18° | 10° | 64 mm |
| BlackrockLeinster | 12 km SW | 18° | 10° | 66 mm |