Kauai Aug 24 Forecast: Exact Hour-by-Hour Plan for Your Perfect Day
Kaua’i Weather Forecast: Your Simple Guide to the Next Few Days
QUICK LOOK: WHAT YOU NEED TO KNOW RIGHT NOW
- Tropical Storm Moke is passing far south of Hawai’i (300+ miles away)
- Breezy trade winds today, calming down by Tuesday
- Rain chances vary by region: 50-70% for most areas
- Big Island has a Flood Watch — Kaua’i stays drier
- Small Craft Advisory for all waters until Monday 6 AM
- Wind Advisory for some islands until midnight tonight
Your Kaua’i Neighborhood Forecast
West Kaua’i (Waimea, Kekaha, Polihale)
| Time | Conditions | Temperatures | Winds | Rain Chance |
|---|---|---|---|---|
| Tonight | Mostly clear, few showers | 76°F (shore) / 66°F (mountains) | NE up to 15 mph | 20% |
| Monday | Sunny AM → partly cloudy PM, scattered showers | 88-93°F (shore) / 79°F (mountains) | E up to 20 mph | 50% |
| Mon Night | Partly cloudy, showers evening → isolated late | 74-82°F (shore) / 65°F (mountains) | E up to 15 mph | 50% |
South Kaua’i (Po’ipū, Kōloa, Lāwa’i)
| Time | Conditions | Temperatures | Winds | Rain Chance |
|---|---|---|---|---|
| Tonight | Breezy, mostly cloudy, scattered showers | 73-78°F | NE 15-20 mph | 50% |
| Monday | Breezy, partly sunny, scattered showers | 81-91°F | NE 15-20 mph | 50% |
| Mon Night | Breezy, mostly cloudy, scattered showers | 73-81°F | NE 15-20 mph | 50% |
Kaua’i Mountains (Kōke’e, Alaka’i, Waimea Canyon)
| Time | Conditions | Temperatures | Winds | Rain Chance |
|---|---|---|---|---|
| Tonight | Breezy, mostly cloudy, scattered showers | 71°F (valleys) / 64°F (4000+ ft) | E 10-20 mph | 50% |
| Monday | Mostly cloudy, numerous showers | 75-83°F (valleys) / 69°F (4000+ ft) | E up to 15 mph | 70% |
| Mon Night | Mostly cloudy, scattered showers | 69°F (valleys) / 61°F (4000+ ft) | E up to 15 mph | 50% |
North Kaua’i (Hanalei, Hā’ena, Princeville, Kilauea)
| Time | Conditions | Temperatures | Winds | Rain Chance |
|---|---|---|---|---|
| Tonight | Mostly cloudy, scattered showers | 67-76°F | E up to 15 mph | 50% |
| Monday | Partly sunny, scattered showers | 72-88°F | E up to 15 mph | 50% |
| Mon Night | Partly cloudy, isolated → scattered showers | 65-76°F | E up to 15 mph | 40% |
East Kaua’i (Līhu’e, Kapa’a, Wailua, Anahola)
| Time | Conditions | Temperatures | Winds | Rain Chance |
|---|---|---|---|---|
| Tonight | Mostly cloudy, scattered showers | 69-78°F | NE 10-15 mph | 50% |
| Monday | Mostly cloudy, scattered showers | 79-87°F | NE 10-15 mph | 50% |
| Mon Night | Mostly cloudy, scattered showers | 68-79°F | E 10-15 mph | 50% |
The Big Picture: What’s Going On?
Meet Tropical Storm Moke
Think of Moke like a big, wet spinning top passing way south of us — over 300 miles south of the Big Island. It’s not coming here, but it’s messing with our weather from a distance.
How Moke Affects Kaua’i (In Simple Steps)
- Moke pulls on our air → Creates a tight pressure squeeze (like squeezing a balloon)
- Squeeze = stronger trade winds → Breezy to locally strong winds across the state
- Moke’s moisture gets sheared north → Wet stuff brushes Big Island (heavy rain there)
- Kaua’i gets the leftovers → Passing showers on windward (north/east) sides, less rain leeward (south/west)
- Moke moves west → Pressure squeeze relaxes → Winds calm down by Tuesday
- Normal trade winds return → Typical summer pattern: showers on windward slopes, sunny leeward
ELI5 ANALOGY: Imagine a big fan (Moke) blowing past your house. Even though it’s not pointed at you, the air rushing by makes your wind chimes (trade winds) ring louder. Once the fan moves away, things settle down.
Special Conditions You Should Know
For Flyers (Aviation)
| Condition | What It Means | Where |
|---|---|---|
| MVFR | "Marginal" visibility — pilots need instruments sometimes | Windward Big Island |
| IFR | "Instrument" visibility — pilots must use instruments | Windward Big Island (tonight) |
| VFR | "Visual" — normal flying conditions | Everywhere else |
| AIRMET Tango | Bumpy air near mountains (turbulence) | Downwind of terrain statewide |
| AIRMET Sierra | Mountains hidden in clouds | Windward sides of all islands |
BOTTOM LINE: If you’re flying inter-island, expect some bumps and clouds on windward sides. Big Island flights may have delays.
For Boaters & Beachgoers (Marine)
| Alert | Until | What It Means |
|---|---|---|
| Small Craft Advisory | Mon 6 AM | Winds 25-33 knots, seas 10+ ft — small boats stay in |
| Tropical Storm Warning | Ongoing | Offshore waters only — not coastal |
Surf Forecast:
- East/ESE shores: Choppy, elevated, trending down Monday
- South shores: Below summer normal, but new 3-4 ft swell arriving Mon-Tue
- North/West shores: Small swell from Hurricane Lala peaked, dropping Monday
For Fire Safety (Fire Weather)
- Good news: Higher humidity (moist air) = lower fire risk
- Winds easing tonight and Monday
- Big Island gets heavy rain; Kaua’i gets lighter amounts
- By Tuesday: Back to normal summer trade pattern
Current Alerts & Warnings (Active Now)
| Alert | Areas | Until |
|---|---|---|
| Wind Advisory | Parts of Maui County & Big Island (not Kaua’i) | Midnight tonight |
| Flood Watch | Big Island only | Monday afternoon |
| Small Craft Advisory | All Hawaiian waters | Monday 6 AM HST |
KAUA’I SPECIFIC: No Wind Advisory or Flood Watch for Kaua’i. Small Craft Advisory covers our waters too.
Your Week Ahead at a Glance
| Day | Winds | Rain Pattern | Vibe |
|---|---|---|---|
| Tonight | Breezy | Scattered showers windward | Damp, breezy night |
| Monday | Breezy | Scattered showers, more in mountains | Typical trade day |
| Tuesday | Moderate | Drier, typical trade showers | Nice! |
| Wed-Fri | Moderate trades | Windward showers, leeward sun | Classic summer |
Summary
Kaua’i is getting a "glancing blow" from Tropical Storm Moke. The storm stays far south, but it’s juicing up our trade winds and sending extra moisture our way. Expect:
- Breezy conditions through Monday
- Passing showers (50-70% chance depending on where you are)
- Mountains = wetter (70% chance Monday)
- Improving Tuesday as Moke departs westward
- No major threats for Kaua’i — no flood watch, no wind advisory
- Boaters: Heed the Small Craft Advisory until Monday morning
Bottom line: Pack a light rain jacket, secure loose outdoor items, and enjoy the tropical breeze. By mid-week, it’s back to classic Kaua’i summer perfection.
FAQ: Your Questions Answered
1. Is Tropical Storm Moke going to hit Kaua’i?
No. Moke is passing over 300 miles south of the Big Island — that’s really far. It will continue moving westward away from the state. We only feel its "outer influence" (stronger winds, extra moisture).
2. Why is it so windy if the storm is far away?
Storms are like giant vacuum cleaners. Moke pulls air toward it, which tightens the pressure gradient (difference in air pressure) across Hawai’i. Tighter gradient = faster wind. Think of it like a balloon: squeeze one side, air rushes to the other.
3. What does "windward" and "leeward" mean?
- Windward = Side facing the wind (north & east shores). Gets more rain because winds push moist air up mountains.
- Leeward = Side sheltered from wind (south & west shores). Gets less rain, more sun.
4. Should I cancel my boat tour / helicopter ride / hike?
- Boat tours: Check with operator — Small Craft Advisory until Mon 6 AM means rough seas.
- Helicopters: May be bumpy; morning flights usually smoother. Blue Hawaiian (our sponsor!) knows local conditions best.
- Hikes: Mountain trails (Kōke’e, Alaka’i) = wet, muddy, slippery (70% rain Monday). Canyon/coastal trails = better. Check DLNR for closures.
5. When will the weather get "back to normal"?
Tuesday. Trade winds drop to moderate (10-15 mph), rain chances decrease, and we settle into classic summer pattern: sunny mornings, windward afternoon clouds/showers, gorgeous leeward sunset skies.
Data courtesy of NOAA.gov | Forecast brought to you by Blue Hawaiian Helicopters — Book a Kaua’i Tour today!