Handheld Anemometers — Complete NZ Guide
Your essential New Zealand guide to handheld anemometers (portable wind meters): how they work and what to look for.
Table of Contents
What is a handheld anemometer?
How a handheld anemometer works
Why buy a handheld anemometer?
Buying guide — features to prioritise
How to use a handheld anemometer (best practice)
Frequently Asked Questions (FAQ)
What is a Handheld Anemometer?
A handheld anemometer is a portable instrument used to measure wind speed — often in metres per second (m/s), kilometres per hour (km/h), knots, or miles per hour. Many modern units also measure temperature, humidity, and pressure. In New Zealand, they’re popular for sailing, kiteboarding, farming, site safety, and general weather checks.
Types of Handheld Anemometers
- Vane (propeller) anemometers — common in portable units, good for directional wind checks.
- Cup anemometers — miniature versions of permanent weather station sensors.
- Ultrasonic anemometers — high accuracy, no moving parts, less common in pocket meters.
- Hot-wire anemometers — suited for HVAC and low air-flow work.
How a Handheld Anemometer Works
The sensor converts physical effects (vane rotation, sound pulses, or heat loss) into an electrical signal. The device then calculates and displays wind speed. Many also compute wind chill, dew point, or barometric trends — handy in New Zealand’s variable conditions.
Why Buy a Handheld Anemometer?
- Portability: Instant readings at the coast, on the farm, or at worksites.
- Safety: Check wind before roofing, scaffolding, or helicopter lifts.
- Recreation: Essential for sailing, paragliding, and kite sports around NZ beaches.
- Versatility: Many models double as full weather meters.
Kestrel Anemometers Overview
Kestrel is a leading brand for rugged handheld weather meters. They’re designed to survive New Zealand’s changeable conditions — waterproof, drop-resistant, and accurate. Models range from simple wind meters to advanced weather trackers with Bluetooth and datalogging.
| Kestrel Feature | Why it Matters in NZ |
|---|---|
| Water resistance | Withstands coastal spray and rain |
| Temperature & humidity sensors | Useful for farming, forestry, and outdoor work |
| Data logging | Track wind events across a work day |
| Bluetooth | Upload readings to your phone for reports |
Buying Guide — Features to Prioritise
- Measurement range: Suits both light breezes and NZ’s stronger coastal winds.
- Accuracy: ±3–5% is typical; higher accuracy costs more.
- Durability: Look for IP ratings and tough casings.
- Extra functions: Temperature, barometric pressure, dew point.
- Ease of use: Backlit screen for night use, glove-friendly buttons.
How to Use a Handheld Anemometer (Best Practice)
- Hold at least 1–2 metres above the ground, away from your body.
- Point the sensor directly into the wind.
- Take several readings and note average, gust, and lull.
- For consistency, measure at the same spot each time.
Accuracy & Maintenance
For accurate results:
- Keep the vane or impeller clean and free of grit.
- Rinse with fresh water after salt exposure (e.g., boating in NZ seas).
- Replace batteries regularly.
- Calibrate if using professionally (for workplace safety, or research).
Frequently Asked Questions (FAQ)
- What is the best handheld anemometer for NZ use?
- A durable, waterproof vane-style meter is best. Kestrel models are highly regarded here for reliability and accuracy.
- Can I use an anemometer in the rain?
- Yes, if it has an IP rating. Water on the vane may slightly affect readings, but rugged models handle wet weather well.
- How accurate are handheld anemometers?
- Most quality units are within ±3–5% accuracy. For critical work, check calibration or choose a professional-grade meter.
- Do they need calibration?
- Casual users don’t usually need it, but professionals should calibrate periodically to maintain accuracy.
- Are they useful for sailing and sports?
- Absolutely — they’re standard gear for sailors, paragliders, and kiteboarders across New Zealand.
Like to learn more about weather stations? Read our Ultimate Guide to Weather Stations