January 1–7
In 5 of the last 5 years, 5+ of those 7 days hit the bar — the most reliable week of the month. Averaged 6.4/7 good days.
How beach days trend across the year
Share of days that clear the beach bar, by month — January highlighted.
Activity by activity
🏖️ Beach Day · January · South Maui (leeward)
Go for it — the odds are strongly in your favor.
72% of days hit the bar — 112 of 155 days across 5 years.
- Avg high
- 78°F
- Avg daily rain
- 0.14 in
- Avg max wind
- 10 mph
My bar for a beach day: ≤0.08 in rain · ≥75°F high · ≤16 mph wind
🥾 Hiking · January · Upcountry (~700m)
Go for it — the odds are strongly in your favor.
84% of days hit the bar — 130 of 155 days across 5 years.
- Avg high
- 73°F
- Avg daily rain
- 0.11 in
- Avg max wind
- 11 mph
My bar for a hiking: ≤0.20 in rain · 64°F–86°F high
January 10–16
In 5 of the last 5 years, 5+ of those 7 days hit the bar — the most reliable week of the month. Averaged 6.8/7 good days.
🤿 Snorkeling · January · South Maui (leeward)
A coin flip. Bookable, but keep a backup plan.
65% of days hit the bar — 100 of 155 days across 5 years.
- Avg high
- 78°F
- Avg daily rain
- 0.14 in
- Avg max wind
- 10 mph
My bar for a snorkeling: ≤0.12 in rain · ≥75°F high · ≤12 mph wind
🚁 Helicopter Tour · January · Kahului
A coin flip. Bookable, but keep a backup plan.
51% of days hit the bar — 79 of 155 days across 5 years.
- Avg high
- 79°F
- Avg daily rain
- 0.07 in
- Avg max wind
- 14 mph
My bar for a helicopter tour: ≤0.04 in rain · ≤16 mph wind
⛵ Boat Tour · January · Māʻalaea Bay
Go for it — the odds are strongly in your favor.
90% of days hit the bar — 140 of 155 days across 5 years.
- Avg high
- 79°F
- Avg daily rain
- 0.11 in
- Avg max wind
- 9 mph
My bar for a boat tour: ≤0.20 in rain · ≤19 mph wind
January 1–7
In 5 of the last 5 years, 5+ of those 7 days hit the bar — the most reliable week of the month. Averaged 6.8/7 good days.
Going with someone? Send them the call.
Saves the “which month?” back-and-forth.
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