Hawaii · Month comparison
September vs May
May ranks #1 overall vs September at #4. The best month nobody talks about — near-summer weather at shoulder prices with empty beaches.
September
#4 of 12 months
Best match
The most underrated month — summer weather persists as crowds and prices drop sharply after Labor Day.
- ↑US Labor Day (first Monday in September) marks the end of peak summer travel, and the weeks following see a dramatic drop in both visitor numbers and accommodation pricing — Hawaii in mid-to-late September has near-identical weather to July and August at 30–40% lower rates
- ↑Beaches across all islands feel meaningfully calmer after school returns: Waikiki is walkable again, Hanauma Bay snorkel reservations become easier to obtain, and Maui's most popular beaches offer parking without the dawn-arrival requirement of July
May
#1 of 12 months
Best match
The best month nobody talks about — near-summer weather at shoulder prices with empty beaches.
- ↑May delivers summer-quality weather — just 24mm of rain, 8.5 sunshine hours daily, and temperatures reaching 29°C — with none of summer's prices or crowds; it is statistically the best month for value-to-conditions ratio across the Hawaiian islands
- ↑Lei Day (May 1) is the Hawaiian cultural celebration of flowers and community — a genuine local event rather than a tourist production, with lei-making competitions, hula performances, and outdoor markets that offer an authentic entry into Hawaiian culture
| Factor | September | May |
|---|---|---|
| Weather score | 9 | 9 |
| Value score | 6 | 7 |
| Crowd score | 6 | 7 |
| Events score | 5 | 5 |
| Atmosphere | 8 | 8 |
| Avg high temp | 31°C | 29°C |
| Monthly rain | 22mm | 24mm |
| Daily sunshine | 8.5hrs | 8.5hrs |
September trade-offs
- ↓Labor Day weekend itself (first weekend of September) still carries peak-season pricing and crowds — the drop-off happens in the week following, not on the holiday weekend itself
- ↓Hurricane season (June–November) peaks in September for the Central Pacific — while strikes on Hawaii are rare, late-season tropical activity can occasionally generate swells that affect north-facing beaches; monitor forecasts
- ↓Some seasonal beach concessions and activity operators begin to reduce hours in late September as the primary summer season winds down; early morning and late afternoon options can narrow at some smaller beach parks
May trade-offs
- ↓Memorial Day weekend (end of May) brings a sharp demand spike — the final days of May see a significant jump in domestic US travel and prices; book accommodation for the Memorial Day long weekend well in advance or accept higher rates
- ↓Some visitor attractions and beach concessions are not yet at full summer hours in early May — a handful of seasonal operations (paddleboard rentals, snorkel tours on certain islands) are still in shoulder-season mode
- ↓May is genuinely post-whale season — anyone specifically visiting for humpback sightings will be disappointed; the whale boats still run but sightings are sporadic rather than reliable
Scores compare months within Hawaii. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →