| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4.6° | -0.2° | 111.5mm | 18.6 | 17 |
| February | 4.9° | -0.2° | 105.9mm | 16.7 | 18 |
| March | 6.7° | 0.9° | 72.4mm | 14.8 | 26 |
| April | 10.5° | 3.5° | 61.1mm | 13.1 | 43 |
| May | 13.8° | 7° | 61.2mm | 13.1 | 54 |
| June | 16.7° | 10.2° | 68mm | 12.1 | 65 |
| July | 18.7° | 12.6° | 96.3mm | 15 | 66 |
| August | 19.1° | 12.8° | 123.1mm | 15.7 | 67 |
| September | 16.5° | 10.6° | 134.4mm | 17.1 | 59 |
| October | 12.2° | 6.8° | 156.9mm | 20.3 | 45 |
| November | 8.2° | 3.1° | 135mm | 18.7 | 32 |
| December | 5.5° | 0.5° | 124.4mm | 19.3 | 21 |
January in Sandnes averages a daily high of 4.6°C with nights around -0.2°C. Expect roughly 18.6 wet days totalling 111.5mm. A hard month to visit for comfort alone.
February in Sandnes averages a daily high of 4.9°C with nights around -0.2°C. Expect roughly 16.7 wet days totalling 105.9mm. A hard month to visit for comfort alone.
March in Sandnes averages a daily high of 6.7°C with nights around 0.9°C. Expect roughly 14.8 wet days totalling 72.4mm. A hard month to visit for comfort alone.
April in Sandnes averages a daily high of 10.5°C with nights around 3.5°C. Expect roughly 13.1 wet days totalling 61.1mm. Demanding conditions — pack for it and plan indoor options.
May in Sandnes averages a daily high of 13.8°C with nights around 7°C. Expect roughly 13.1 wet days totalling 61.2mm. Demanding conditions — pack for it and plan indoor options.
June in Sandnes averages a daily high of 16.7°C with nights around 10.2°C. Expect roughly 12.1 wet days totalling 68mm. Generally workable, with some weather to plan around.
July in Sandnes averages a daily high of 18.7°C with nights around 12.6°C. Expect roughly 15 wet days totalling 96.3mm. Generally workable, with some weather to plan around.
August in Sandnes averages a daily high of 19.1°C with nights around 12.8°C. Expect roughly 15.7 wet days totalling 123.1mm. Generally workable, with some weather to plan around.
September in Sandnes averages a daily high of 16.5°C with nights around 10.6°C. Expect roughly 17.1 wet days totalling 134.4mm. Generally workable, with some weather to plan around.
October in Sandnes averages a daily high of 12.2°C with nights around 6.8°C. Expect roughly 20.3 wet days totalling 156.9mm. Demanding conditions — pack for it and plan indoor options.
November in Sandnes averages a daily high of 8.2°C with nights around 3.1°C. Expect roughly 18.7 wet days totalling 135mm. A hard month to visit for comfort alone.
December in Sandnes averages a daily high of 5.5°C with nights around 0.5°C. Expect roughly 19.3 wet days totalling 124.4mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Sandnes peaks at 67.
Based on 30 years of records, June–September scores highest for comfort in Sandnes, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 19.1°C.
October is the wettest, averaging 156.9mm of rain across roughly 20.3 wet days.
January is the coolest month, with average daily highs around 4.6°C.