When to go · United Kingdom
When to go to Isle of Lewis
When to go
What the averages say
No month in Isle of Lewis averages a high of 18°C or more; the warmest, August, averages 15°C.
- Cold months (a mean high under 10°C): December to April.
- The warmest month is August (15°C) and the coolest February (7°C). The wettest is December (145 mm) and the driest April (75 mm); about 1,375 mm of rain falls in a year.
How these sentences are worded
Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.
The model's grid cell here is mostly sea, so the daily high and low sit closer together than they do on land: afternoons ashore are usually warmer, and nights cooler.
The year at a glance
- Mild to warm and dry
- Mild to warm, humid or showery
- Hot
- Cool
- Wet
- Cold
- JanCold
- FebCold
- MarCold
- AprCold
- MayCool
- JunCool
- JulCool
- AugCool
- SeptCool
- OctCool
- NovCool
- DecCold
Month by month
Every month in Isle of Lewis
| Month | High | Low | Rain | Humidity | Cloud | Sunlight (kWh/m²/day) | High in Dubai | What it is like |
|---|---|---|---|---|---|---|---|---|
| January | 8°C | 5°C | 144 mm | 84% | 89% | 0.3 | 23°C | Cold |
| February | 7°C | 5°C | 110 mm | 84% | 87% | 0.9 | 24°C | Cold |
| March | 7°C | 5°C | 105 mm | 84% | 84% | 2 | 27°C | Cold |
| April | 9°C | 7°C | 75 mm | 83% | 81% | 3.5 | 31°C | Cold |
| May | 11°C | 8°C | 89 mm | 83% | 80% | 4.7 | 35°C | Cool |
| June | 13°C | 11°C | 89 mm | 85% | 87% | 4.8 | 37°C | Cool |
| July | 15°C | 12°C | 104 mm | 86% | 87% | 4.4 | 39°C | Cool |
| August | 15°C | 13°C | 118 mm | 86% | 86% | 3.6 | 39°C | Cool |
| September | 14°C | 12°C | 119 mm | 85% | 84% | 2.4 | 37°C | Cool |
| October | 12°C | 10°C | 143 mm | 84% | 85% | 1.2 | 34°C | Cool |
| November | 10°C | 8°C | 134 mm | 83% | 88% | 0.5 | 29°C | Cool |
| December | 8°C | 6°C | 145 mm | 83% | 89% | 0.2 | 25°C | Cold |
The Dubai column is Dubai's mean daily high, for comparison.
Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.
When to go nearby
When to go nearby
- Inverness152 kmNo month mild to warm and not wet
- Aberdeen282 kmNo month mild to warm and not wet
- Dundee282 kmGood for going: July
- Glasgow292 kmNo month mild to warm and not wet
- Edinburgh317 kmGood for going: July
- Londonderry363 kmNo month mild to warm and not wet
- Belfast404 kmNo month mild to warm and not wet
- Tórshavn422 kmNo month mild to warm and not wet
Plan it
Plan a trip to Isle of Lewis
Tell us when and who is travelling, and a person puts the flights, the stays and the rest into one quote.