---
title: "Wet Bulb Thermometer — $120K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/appliances/wet-bulb-thermometer"
last_updated: "2026-08-09T07:42:41.415Z"
locale: en
meta:
description: "Niche score 56/100 · $120K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $120K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Wet Bulb Thermometer — $120K/yr Amazon US Niche (2026) - Flapen"
---
# **wet bulb thermometer**
**Worth a look**
Shows demand growing +217.1% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 28Growth 98Conversion 52Competition 31Returns 88Price range 16Avg price 86Brand share 49Review moat 23Quality gap 73
**Growth**
**Incredible****+217.1%**
90-day search growth — must beat 0% to launch
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$70.02**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****4.3%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$120K**
$120K/yr · 40K searches
**Review moat**
**Bad****8,024.2**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Bad****$10.88–$536.70**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, wet bulb thermometer is a $120K/yr Amazon United States market (40K searches/yr). The top 5 brands hold 76% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 56/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **wet bulb thermometer market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$105K–$140K**
- units × avg price
- **Conversion rate**
- **4.3%**
- **Avg BSR**
- **#108**
- **Page quality**
- **0%**
- **Prime**
- **95%**
- **Sponsored**
- **95%**
- **Out of stock**
- **2.3%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **182 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▼falling
**Sellers**
**45**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**67%**
Top 20: 100%
**Open market**
**21%**
- Protmex28% - Triplett28% - BTMETER12% - SQECH4% - Preciva4% - Sper Scientific4%
## **Demand & seasonality**
Weekly Amazon search volume, last 109 weeks — +217.1% search growth over the last 90 days.
3K2KPrime Day '24Spike '24Spike '25Holiday '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul, Aug · busiest ÷ quietest = 7.3×
[**Open Trend **](https://flapen.com/research/us/appliances/wet-bulb-thermometer/trend)
## **Top wet bulb thermometer search terms**
- **wet bulb thermometer**19K/yr+218.7%3.8% conv. - **wet bulb globe thermometer**10K/yr+483.9%3.5% conv. - **dew point meter**10K/yr+80.3%2.6% conv. [**All search terms **](https://flapen.com/research/us/appliances/wet-bulb-thermometer/search-terms)
## **Top wet bulb thermometer products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$12K20%$24K30%$36K40%$48K1101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Triplett HS10 Heat Stress WBGT Meter**Triplett**$48.87**4.2★63 rev](https://www.amazon.com/dp/B0B47R5GJF) [2**HT607 Temperature Humidity Meter - Large LCD Backlight with Cover Protector**Protmex**$33.59**4.5★1,102 rev](https://www.amazon.com/dp/B0BD7NQG2J) [3**BTMETER BT-881W Heat Stress Meter Anemometer Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed Ambient Temp Humidity Tester**BTMETER**$35.79**4.4★47 rev](https://www.amazon.com/dp/B09WMQTFKD) [4**Protmex PT6508 Temperature Humidity Meter - Wet Bulb for Indoor/Outdoor**Protmex**$53.25**4.6★768 rev](https://www.amazon.com/dp/B017NF1POE) [5**YT606 Temperature Humidity Meter High Precision Digital Hygrometer with Ambient Relative Humidity Dew Point Wet Bulb Thermometer for Indoor Outdoor Digital Thermometer Min/Max Hold LCD Backlight**Protmex**$37.57**4.4★94 rev](https://www.amazon.com/dp/B0F61HBSX5)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**BOBOVAV Temperature Humidity Meter 4 in 1 Psychrometer with Ambient Temperature Relative Humidity Dew Point and Wet Bulb Backlight Min/Max and Data Hold Hygrometer for HVAC Indoor Basement**BOBOVAV**$20.95**17 rev3mo ago](https://www.amazon.com/dp/B0GVY64PY9) [**SQECH Temperature Humidity Meter Digital Hygrometer Psychrometer HVAC**SQECH**$29.28**59 rev7mo ago](https://www.amazon.com/dp/B0G4VXFMKG) [**INSTRODOTS Temperature Humidity Meter High Precision Thermometer Hygrometer with Ambient Dew Point Wet Bulb Thermometer Dual Display Temperature & Humidity with LCD Backlight TH10**Instrodots**$28.49**95 rev1y ago](https://www.amazon.com/dp/B0F4X49P6P) [**YT606 Temperature Humidity Meter High Precision Digital Hygrometer with Ambient Relative Humidity Dew Point Wet Bulb Thermometer for Indoor Outdoor Digital Thermometer Min/Max Hold LCD Backlight**Protmex**$37.57**94 rev2y ago](https://www.amazon.com/dp/B0F61HBSX5) [**Triplett HSDL300 Heat Stress WBGT Datalogger**Triplett**$187.84**6 rev3y ago](https://www.amazon.com/dp/B0C3RX9Y4B)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BOBOVAV Temperature Humidity Meter 4 in 1 Psychrometer with Ambient Temperature Relative Humidity Dew Point and Wet Bulb Backlight Min/Max and Data Hold Hygrometer for HVAC Indoor Basement**BOBOVAV**$20.95**4.1★**▲ 88%**](https://www.amazon.com/dp/B0GVY64PY9) [**Digital Wind Speed Meter Anemometer Handheld Heat Stress WBGT Meter Tracker Measures Wind Velocity/Wind Temperature/Humidity Wind Gauge Wet-Bulb Globe Temperature Monitor for Industrial and Outdoor**INFURIDER**$29.59**3.8★**▲ 68%**](https://www.amazon.com/dp/B0B6ZRD5Z5) [**SQECH Temperature Humidity Meter Digital Hygrometer Psychrometer HVAC**SQECH**$29.28**4.1★**▲ 67%**](https://www.amazon.com/dp/B0G4VXFMKG) [**Sper Scientific Wet Bulb Globe Heat Stress Meter 800036 - WBGT Heat Index Monitor with Air Temperature Humidity & Globe Temperature for Workplace Sports & Outdoor Activities**Sper Scientific**$153.96**4.4★**▲ 65%**](https://www.amazon.com/dp/B00N5ITAIM) [**Kestrel 5400 Heat Stress Tracker Orange**Kestrel**$536.70**4.8★**▲ 40%**](https://www.amazon.com/dp/B017AF1G0U)
**~~View all trending →~~**
## **What buyers say about wet bulb thermometer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**17%
*“Easy to Read”*
**Advertised Vs Actual Product**15%
*“As advertised”*
**Efficiency**14%
*“Works reliably”*
**Quality-Overall**13%
*“Great quality, price and arrives ready to use”*
**Value For Money**9%
*“Good value for the money”*
**Size-Overall**6%
*“Love the small size”*
**Display-Overall**3%
*“The display is clear”*
**Compactness**2%
*“The hygrometer is compact easy to read”*
**Battery Life**2%
*“Battery life is good”*
**Heating**2%
*“Great Thermometer”*
### **What buyers complain about **
**Size-Overall**21%
*“Little bigger than I wanted”*
**Display-Overall**11%
*“Does not display anything”*
**Functionality-Overall**10%
*“Stopped working”*
**Quality-Overall**10%
*“Poor quality”*
**Durability**9%
*“Broke almost immediately”*
**Battery Life**7%
*“battery was dead when installed”*
**Heating**4%
*“NOT on the temperature”*
**Measurement/Reading Accuracy**3%
*“Reads humidity very not accurate this was reading 37.5% RH”*
**Value For Money**3%
*“Not worth the price”*
**Brightness/Shine/Glow**2%
*“The screen does NOT light up”*
### **Top return reasons **
**Display-Overall**22%
**Functionality-Overall**19%
**Size-Overall**19%
**Advertised Vs Actual Product**11%
**Defective Material/Parts**9%
**Value For Money**6%
**Heating**3%
**Measurement/Reading Accuracy**2%
**Quality-Overall**1%
**Compatibility-Overall**1%
## **Common questions**
- **Is wet bulb thermometer profitable to sell on Amazon United States?**
- The niche generates $120K/yr across 20 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +217.1%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the wet bulb thermometer niche?**
- 16 brands and 45 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in wet bulb thermometer?**
- Top complaints mined from reviews: Size-Overall, Display-Overall, Functionality-Overall. The return rate is 1.4%.
- **When does demand for wet bulb thermometer peak?**
- Demand peaks in Jun–Jul–Aug; the busiest month runs 7.3× the quietest.
- **What does it cost to enter the wet bulb thermometer niche?**
- Listings span $10.88–$536.70; the average listing price is $70.02 (sweet spot $15–$100). The average incumbent carries 8,024 reviews — the moat a new listing must climb.
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