Manchester vs Portland: which is sunnier?
🇺🇸 United States vs 🇺🇸 United States · 121 km apart · long-term climate normals (NASA POWER, 2001–2020)
Manchester and Portland are virtually tied for annual sunshine — about 2,158 vs 2,150 hours a year. Manchester has the higher Sunshine Score in 5 of 12 months; the other 7 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Manchester | Portland | |
|---|---|---|
| Sunshine hours / year | 2,158 | 2,150 |
| Sunniest month | September (75/100) | July (74/100) |
| Nov–Feb average score | 2/100 | 2/100 |
| Jun–Aug average score | 73/100 | 66/100 |
| Rain / year | 1,180 mm | 1,363 mm |
| Peak midday UV | 7 (high) | 7 (high) |
Manchester vs Portland month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Manchester | Portland | Manchester | Portland | Manchester | Portland | |
| January | 0 | 0 | -1° | 1° | 73 | 103 |
| February | 0 | 0 | 1° | 1° | 83 | 103 |
| March | 0 | 0 | 5° | 4° | 99 | 110 |
| April | 30 | 0 | 13° | 8° | 102 | 121 |
| May | 67 | 24 | 19° | 12° | 98 | 101 |
| June | 70 | 51 | 24° | 17° | 115 | 127 |
| July | 74 | 74 | 27° | 21° | 97 | 96 |
| August | 74 | 74 | 27° | 21° | 95 | 94 |
| September | 75 | 61 | 23° | 18° | 90 | 97 |
| October | 46 | 27 | 16° | 13° | 123 | 145 |
| November | 6 | 6 | 9° | 9° | 94 | 125 |
| December | 0 | 0 | 3° | 4° | 111 | 141 |
The sunnier month by month: Jan even · Feb even · Mar even · Apr Manchester · May Manchester · Jun Manchester · Jul even · Aug even · Sep Manchester · Oct Manchester · Nov even · Dec even.
When to pick which
- November–February: too close to call — Manchester averages 2/100, Portland 2/100. Daytime highs are similar (3°C vs 4°C). See the winter sun ranking.
- March–May: Manchester (average score 32/100 vs 8). Manchester is the warmer, around 12°C daytime highs vs 8°C.
- June–August: Manchester (average score 73/100 vs 66). Manchester is the warmer, around 26°C daytime highs vs 20°C.
- September–October: Manchester (average score 61/100 vs 44). Manchester is the warmer, around 20°C daytime highs vs 16°C.
Full month-by-month guides: Manchester weather by month · Portland weather by month · Best time to visit United States.
More comparisons: Manchester vs Boston · Manchester vs Providence/Warwick · Manchester vs Bangor · Portland vs Boston · Portland vs Bangor · all head-to-heads