Bristol vs Southampton: which is sunnier?
🇬🇧 United Kingdom vs 🇬🇧 United Kingdom · 106 km apart · long-term climate normals (NASA POWER, 2001–2020)
Southampton is the sunnier overall: about 1,900 hours of sunshine a year to Bristol's 1,565. Southampton has the higher Sunshine Score in 9 of 12 months; the other 3 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance
| Bristol | Southampton | |
|---|---|---|
| Sunshine hours / year | 1,565 | 1,900 |
| Sunniest month | July (75/100) | September (81/100) |
| Nov–Feb average score | 3/100 | 5/100 |
| Jun–Aug average score | 73/100 | 79/100 |
| Rain / year | 812 mm | 781 mm |
| Peak midday UV | 5 (moderate) | 6 (high) |
Bristol vs Southampton month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Bristol | Southampton | Bristol | Southampton | Bristol | Southampton | |
| January | 0 | 0 | 6° | 8° | 76 | 79 |
| February | 0 | 0 | 7° | 8° | 60 | 61 |
| March | 6 | 13 | 9° | 10° | 60 | 57 |
| April | 26 | 40 | 12° | 14° | 50 | 48 |
| May | 51 | 60 | 16° | 17° | 60 | 54 |
| June | 70 | 79 | 19° | 20° | 62 | 56 |
| July | 75 | 79 | 21° | 23° | 69 | 58 |
| August | 74 | 78 | 20° | 23° | 72 | 64 |
| September | 65 | 81 | 18° | 20° | 50 | 46 |
| October | 36 | 49 | 14° | 16° | 83 | 86 |
| November | 12 | 18 | 10° | 11° | 86 | 87 |
| December | 0 | 0 | 7° | 8° | 84 | 85 |
The sunnier month by month: Jan even · Feb even · Mar Southampton · Apr Southampton · May Southampton · Jun Southampton · Jul Southampton · Aug Southampton · Sep Southampton · Oct Southampton · Nov Southampton · Dec even.
When to pick which
- November–February: too close to call — Bristol averages 3/100, Southampton 5/100. Daytime highs are similar (8°C vs 9°C). See the winter sun ranking.
- March–May: Southampton (average score 38/100 vs 28). Southampton is the warmer, around 14°C daytime highs vs 12°C.
- June–August: Southampton (average score 79/100 vs 73). Southampton is the warmer, around 22°C daytime highs vs 20°C.
- September–October: Southampton (average score 65/100 vs 51). Southampton is the warmer, around 18°C daytime highs vs 16°C.
Full month-by-month guides: Bristol weather by month · Southampton weather by month · Best time to visit United Kingdom.
More comparisons: Bristol vs Cardiff · Bristol vs Bournemouth · Bristol vs Exeter · Southampton vs London · Southampton vs Bournemouth · all head-to-heads