mini hygrometer
Skip itA small market ($52K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Conversion
Great10.2%search→purchase rate — share of searches ending in a sale
Brand share
Good66%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Price range
Okay$5.11–$22.01cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay$9.87avg listing price — sweet spot $15–$100
Review moat
Bad7,671.14avg incumbent reviews — the moat a new listing must climb
Growth
Bad-7.3%90-day search growth — must beat 0% to launch
Market size
Bad$52K$52K/yr · 52K searches
According to Flapen's Amazon United States niche tracking, mini hygrometer is a $52K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 66% of demand. Verdict: Skip it — 46/100.
Data updated Jul 15, 2026 · scored weekly · How we score niches
mini hygrometer market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $59K–$79K
- units × avg price
- Conversion rate
- 10.2%
- Avg BSR
- #25
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 91%
- Out of stock
- 5.1%
- Avg brand age
- 45 months
- Avg seller age
- 202 days
Competition & brand share
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
15 falling
Sellers
23
Top-5 brand share
66%
Top 20: 100%
Top-5 click share
60%
Top 20: 98%
Open market
27%
- Serundo Auto22%
- ANFBYOH17%
- wwhako10%
- JEDEW9%
- JJMTDS8%
- Veanic7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -7.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top mini hygrometer search terms
- mini hygrometer37K/yr
- mini hygrometer thermometer6K/yr
- small hygrometer6K/yr
- mini humidity meter3K/yr
- hygrometer for cannabis jars18/yr
Top mini hygrometer 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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Mini Hygrometer Thermometer Digital Humidity Meter Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Garden Cellar Fahrenheit()/ Celsius() 2 Pack
Serundo Auto$5.974.5★3,331 rev
6-Pack Mini Hygrometer Indoor Humidity Meter Mini Digital Thermometer Humidity Gauge Meter Indoor Thermometer Hygrometer Monitor Fahrenheit () for Reptile Thermostat Jars Reptile Fridge
ANFBYOH$8.124.5★1,920 rev
WWHAKO 4-Pack Mini Hygrometer Thermometer Indoor Outdoor Round Humidity Meter Small Digital LCD Monitor Thermometer Temperature Gauge Humidity Sensor () or () for Reptile Thermostat Jars
wwhako$7.944.5★714 rev
6 Pack Mini Hygrometer Indoor Humidity Meter Small Digital Thermometer Humidity Gauge Meter Indoor Thermometer Hygrometer Monitor Fahrenheit () for Thermostat Reptile Tank Mason Jars
JJMTDS$7.164.5★1,586 rev
4-Pack Mini Digital Temperature Humidity Meters Gauge Indoor Thermometer Hygrometer LCD Display Fahrenheit () for Reptile Tank Jars Guitar Case Greenhouse Garden Cellar Fridge Closet
Veanic$9.834.4★24,543 rev
Newest
by launch date
4-Pack Mini Hygrometer Thermometer Digital LCD Humidity Meter Indoor/Outdoor Temperature Humidity Monitor Reptile Thermometer Fahrenheit()/Celsius() for Incubators Greenhouse Garden Cellar Jars
TeqyAqs$6.3438 rev
Mini Hygrometer Digital Thermometer Humidity Meter 10 Pack Hygrometer Thermometers Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Garden Cellar Fahrenheit()/ Celsius()
Serundo Auto$22.013,331 rev
JEDEW 6 Pack Hygrometer Thermometer Digital Humidity Meter Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Humidors Terrarium Jars / (6)
JEDEW$13.8914,792 rev
Mini Hygrometer Digital Thermometer Humidity Meter 2 Pack Hygrometer Thermometers Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Garden Cellar Fahrenheit()/ Celsius()
WEIMELTOY$5.11395 rev
6 Pack Mini Hygrometer Indoor Humidity Meter Small Digital Thermometer Humidity Gauge Meter Indoor Thermometer Hygrometer Monitor Fahrenheit () for Thermostat Reptile Tank Mason Jars
JJMTDS$7.161,586 rev
Trending
90-day click momentum4-Pack Mini Hygrometer Thermometer Digital LCD Humidity Meter Indoor/Outdoor Temperature Humidity Monitor Reptile Thermometer Fahrenheit()/Celsius() for Incubators Greenhouse Garden Cellar Jars
TeqyAqs$6.344.6★
EWPJDK Mini Hygrometer Indoor Humidity Meter Hygrometer Thermometers 4 Pack Humidity Meters Gauge Mini Digital Thermometer for Humidors Greenhouse Garden Cellar (3)
EWPJDK$5.934.4★
2pcs Mini Hygrometer Thermometer Indoor Outdoor Round Humidity Meter Temperature Gauge Humidity Sensor Fahrenheit Switchable Celsius Monitor for Reptile Jars 3D Printer
Maiweitong$5.954.7★
Mini Hygrometer Digital Thermometer Humidity Meter 10 Pack Hygrometer Thermometers Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Garden Cellar Fahrenheit()/ Celsius()
Serundo Auto$22.014.5★
JEDEW 6 Pack Hygrometer Thermometer Digital Humidity Meter Indoor/Outdoor Humidity Monitor Reptile Thermometer for Greenhouse Humidors Terrarium Jars / (6)
JEDEW$13.894.5★
What buyers say about mini hygrometer
What buyers praise and complain about, mined from review topics.What buyers love
“Great deal”
“As Advertised”
“Easy to Read”
“Good quality build and screen”
“fit just about anywhere”
“Works good and does well in my ams unit”
“Seems accurate”
“have good battery life”
“Durable and accurate”
“Especially good for a humidor”
What buyers complain about
“Inaccurate readings”
“Battery included was dead”
“Really really small”
“Bad quality control”
“Did Not Work”
“Dont last”
“considering how cheap these things are”
“Display is messed up”
“At a glance the big numbers are not the temperature”
“not as advertised”
Top return reasons
Common questions
- Is mini hygrometer profitable to sell on Amazon United States?
- The niche generates $52K/yr across 22 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.3%. Flapen's verdict: Skip it (46/100).
- How competitive is the mini hygrometer niche?
- 15 brands and 23 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 66% of demand.
- What do buyers complain about in mini hygrometer?
- Top complaints mined from reviews: Measurement/Reading Accuracy, Battery Life, Size-Overall. The return rate is 0.8%.
- When does demand for mini hygrometer peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the mini hygrometer niche?
- Listings span $5.11–$22.01; the average listing price is $9.87 (sweet spot $15–$100). The average incumbent carries 7,671 reviews — the moat a new listing must climb.