Is Christchurch sunnier than Blenheim?

Blenheim is the sunnier: about 2,486 hours of sunshine a year versus 2,377 — a difference of 109 hours.

Which is warmer, Christchurch or Blenheim?

Year-round daytime highs are similar: Christchurch averages 17°C (63°F), Blenheim 18°C (64°F).

Which is better in winter (November–February), Christchurch or Blenheim?

They are close in the November–February window: Christchurch averages 79/100 (about 22°C days), Blenheim 81/100 (about 22°C).

Christchurch vs Blenheim: which is sunnier?

🇳🇿 New Zealand vs 🇳🇿 New Zealand · 245 km apart · long-term climate normals (NASA POWER, 2001–2020)

Blenheim is the sunnier overall: about 2,486 hours of sunshine a year to Christchurch's 2,377. Blenheim has the higher Sunshine Score in 7 of 12 months; the other 5 are within 2 points.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Christchurch	Blenheim
Sunshine hours / year	2,377	2,486
Sunniest month	February (82/100)	February (84/100)
Nov–Feb average score	79/100	81/100
Jun–Aug average score	20/100	24/100
Rain / year	845 mm	803 mm
Peak midday UV	9 (very high)	9 (very high)

Christchurch vs Blenheim month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Christchurch	Blenheim	Christchurch	Blenheim	Christchurch	Blenheim
January	80	83	24°	24°	67	55
February	82	84	23°	24°	58	51
March	82	83	21°	22°	61	56
April	59	67	17°	18°	77	73
May	39	46	14°	15°	79	76
June	20	26	11°	12°	80	86
July	13	20	10°	11°	73	74
August	27	27	12°	12°	70	68
September	41	48	14°	15°	57	64
October	52	60	16°	17°	78	73
November	74	76	19°	19°	68	55
December	79	80	22°	22°	77	72

The sunnier month by month: Jan Blenheim · Feb even · Mar even · Apr Blenheim · May Blenheim · Jun Blenheim · Jul Blenheim · Aug even · Sep Blenheim · Oct Blenheim · Nov even · Dec even.

When to pick which

November–February: too close to call — Christchurch averages 79/100, Blenheim 81/100. Daytime highs are similar (22°C vs 22°C).
March–May: Blenheim (average score 65/100 vs 60). Daytime highs are similar (17°C vs 18°C).
June–August: Blenheim (average score 24/100 vs 20). Daytime highs are similar (11°C vs 12°C).
September–October: Blenheim (average score 54/100 vs 47). Daytime highs are similar (15°C vs 16°C).

Full month-by-month guides: Christchurch weather by month · Blenheim weather by month · Best time to visit New Zealand.

More comparisons: Christchurch vs Wellington · Christchurch vs Dunedin · Christchurch vs Invercargill · Blenheim vs Wellington · Blenheim vs Dunedin · Blenheim vs Palmerston North · all head-to-heads